Welding a worn pump casing back to spec means a heat-affected zone, distortion risk, and equipment offline for the job — when the actual failure is localized erosion or corrosion, not a structural break that needs a new weld. Incure's Epo-Weld™ high strength structural line addresses that gap with three cold-applied repair compounds, each built around a different failure mode rather than one general-purpose "metal repair epoxy." Three Grades, One Shared Job: Replacing Welding for Metal Repair All three grades — HSS-601, HSS-604, and HSS-610 — are two-part, thixotropic pastes explicitly formulated to replace welding for restoring worn, eroded, or corroded metal components rather than bonding new assemblies together, the category this line occupies distinctly from Incure's other Epo-Weld™ structural and high-temperature lines. All three are also thixotropic pastes rather than flowable liquids, formulated to stay in place on a vertical pump housing or the inside wall of a tank during application rather than sagging or running off before cure locks the repair in — a practical requirement for in-place repairs on equipment that can't always be rotated to a favorable orientation. That shared purpose is where the similarity ends: each grade is filled and reinforced differently to solve a specific repair problem, and picking the wrong one means specifying an abrasion-resistant patch where a chemically resistant barrier was actually needed, or the reverse. Reinforcement Fiber vs. Filler Metal: Two Different Repair Approaches HSS-601 is a glass-fiber- and kevlar-reinforced epoxy novolac at Shore D83–D93, 13,500 PSI flexural strength, and 2,400 PSI tensile shear — its reinforcement fibers are there specifically to stop crack propagation and impact damage on an eroded surface, making it the grade for chutes, hoppers, and pump casings that see abrasive wear rather than a clean structural load. HSS-604 takes a different route: aluminum- and ceramic-filled, at D84–D94 hardness with 14,500 PSI flexural and 2,700 PSI tensile shear, formulated so its high aluminum content lets the cured repair be machined, drilled, and tapped like metal — a genuinely different capability than HSS-601 offers, and the reason HSS-604 is the grade specified for restoring molds, dies, and engine blocks that need precise dimensional finishing after the repair cures, not just a durable patch. It also holds adhesion and structural integrity through vibration and thermal cycling, relevant on engine blocks and heat exchangers that see both mechanical and thermal stress in normal operation, not just the one-time load of the repair itself. Chemical Resistance Is HSS-610's Differentiator HSS-610 is ceramic-filled like HSS-604 and shares its machinable finish, but its filler chemistry is chosen for chemical resistance rather than metal-like machinability — Shore D83–D93 hardness, the line's highest flexural strength at 16,500 PSI, and 2,800 PSI tensile shear, built as a chemically resistant barrier against acids, alkalis, and solvents on components that stay in continuous chemical service after the repair. It also resists moisture and salt spray specifically, a distinction worth checking for offshore and marine equipment where corrosion resumes almost immediately if the repair barrier itself isn't salt-resistant. That's…

A bond line rated to withstand 572°F sounds like a single spec until the joint also needs to block light, absorb a thermal-expansion mismatch, or stay electrically insulating while it moves heat — and no single formulation does all of that at once. Incure's Epo-Weld™ ultra high temperature line splits that range across seven grades, each built around a specific function rather than temperature resistance alone, since the ceiling temperature is really just the starting requirement every grade in this line already meets. Chemical Resistance at 572°F Anchors the Line's High End UHTE-5320 and UHTE-5325 are functionally the same formulation under two catalog numbers — both clear-amber, two-part epoxies at Shore D84–D94 hardness, 20,000 PSI flexural strength, and 2,900 PSI tensile shear, cured either 2 hours at 200°F plus 2 hours at 325°F or 3–4 hours at 300°F. Their high cross-link density is built specifically to resist chemical penetration and swelling from acidic and alkaline solutions, steam, solvents, and salt spray while holding bond strength to 572°F (300°C) — a combination aimed at chemical process equipment and aerospace assemblies that see aggressive chemistry and heat at the same time, not just one or the other. Both grades also meet NASA outgassing requirements, relevant for any assembly destined for a sealed or vacuum enclosure. Opacity, Flexibility, and Cure Speed Set the Rest of the Line Apart UHTE-5313 takes a different approach entirely: a black, alumina-filled epoxy formulated for optical opacity rather than chemical resistance, blocking ambient light to prevent optical noise and signal degradation in potted sensors and opaque-bonded automotive components. At Shore D85–D95 and 9,200 PSI tensile shear — the highest tensile figure in the line by a wide margin — it cures faster and cooler than the chemical-resistance pair, at 2 hours at 100°F plus 2 hours at 150°F, or 4 hours at 125°F. UHTE-5321 goes further in the opposite mechanical direction: a single-part, flexible contact adhesive with no fixed hardness or flexural rating, purpose-built to bond dissimilar substrates with mismatched coefficients of thermal expansion without cracking or delaminating as the joint heats and cools. Its cure schedule is the fastest in the entire line — roughly 18 minutes at 180°F followed by 30 minutes at 350°F — a genuine advantage on a line running tight cycle times, though it trades away the rigid load-bearing numbers the other grades carry. Filler Chemistry Splits Thermal and Electrical Function Across Three Grades UHTE-5322, UHTE-5382, and UHTE-5391 all use filler chemistry to solve a thermal or electrical problem rather than a pure mechanical one — the same pattern Incure's thermally conductive epoxy line uses at lower service temperatures. UHTE-5322 is aluminum-filled for straightforward thermal conductivity in heat-sink bonding and thermal-probe fabrication, and it's the only grade in the line offering a room-temperature cure option (24 hours at 77°F, or 2 hours at 200°F if oven capacity is available) rather than requiring elevated heat throughout. UHTE-5382 swaps in aluminum nitride filler — a ceramic that conducts heat while remaining electrically insulating, the same…

A rigid epoxy can post impressive tensile numbers on a datasheet and still crack the first time the joint actually sees vibration or a rapid temperature swing — because raw strength and impact resistance aren't the same property, and a bond line that can't absorb shock fails at the interface long before it reaches its rated load. Incure's Epo-Weld™ ultra high bond line addresses that gap directly with two rubberized grades built to flex under stress rather than resist it until they snap, spanning general-purpose vibration resistance on one end and genuine cryogenic service on the other. Two Grades, Same Rubberized Principle, Different Extremes UHB-100 is an unfilled, rubberized epoxy at Shore D81–D91 with 14,000 PSI flexural strength and 4,600 PSI tensile shear, flowing at 4,000–6,000 cP for general dispensing. It's formulated as the line's general-purpose high-strength grade — bonding dissimilar materials and vibration-prone assemblies where a rigid adhesive would eventually fatigue and crack at the bond line. UHB-200 swaps in a ceramic filler and softer D73–D83 hardness, trading some flexural strength (12,500 PSI) for a higher 4,800 PSI tensile shear and a genuinely different service envelope: rated down to −67°C, it retains flexibility and peel strength at liquid-nitrogen temperatures where a standard rigid epoxy would embrittle and delaminate on the first thermal cycle. Both cure on the same schedule — 48 hours at room temperature or 2 hours accelerated at 150°F — so the choice between them comes down to service temperature and viscosity rather than cure logistics. Viscosity itself is worth checking against the application directly: UHB-100's more flowable 4,000–6,000 cP consistency suits general dispensing and thinner bond lines, while UHB-200's thicker 8,800–13,200 cP range holds its shape better in a deep-section pour, a relevant distinction given that deep potting is one of the line's core use cases. Rubberized Chemistry Solves a Different Problem Than Raw Strength Neither grade is competing with Incure's rigid high-temperature structural epoxies on peak tensile numbers — that's not what the rubberized formulation is optimized for. A rigid, high-modulus epoxy resists deformation right up until it exceeds its strain limit, at which point it fractures rather than yields. UHB-100 and UHB-200 both sacrifice some of that peak rigidity for elongation and impact absorption, distributing stress across the bond line instead of concentrating it at a single failure point. That trade-off is the entire point in vibration-prone assemblies and dynamic-load environments, where the failure mode that actually matters is fatigue cracking under repeated flex, not a single static overload. Cryogenic Rating Is UHB-200's Genuine Differentiator Most structural epoxies become brittle well before −67°C, since the polymer's glass transition behavior under deep cold works against exactly the elongation a bond line needs to survive a rapid temperature swing without cracking. UHB-200's ceramic-filled, rubber-modified formulation is built specifically to counter that — retaining flexibility and bond strength through the kind of thermal shock a superconducting magnet or liquid-nitrogen vessel assembly actually experiences in service, rather than the more moderate thermal cycling most structural epoxies are qualified…

Bonding a heat sink to a power transistor with a standard structural epoxy solves the mechanical half of the problem and quietly creates a thermal one — a non-conductive bond line traps heat exactly where it needs to escape fastest, turning what should be a heat-transfer path into an insulating layer. Incure's Epo-Weld™ thermally conductive line addresses that directly across three grades, but the choice between them turns on more than just how well heat moves through the cured bond — filler chemistry, viscosity, and whether the joint also needs to stay electrically isolated all factor into which of the three actually fits. Two Aluminum-Filled Grades, Different Viscosity and Hardness Profiles TC-9033 is a thixotropic paste at Shore D70–D80, with 12,000 PSI flexural strength and 2,600 PSI tensile shear, formulated as a general-purpose thermal bonding grade for heat sinks and cryogenic components — it meets NASA outgassing requirements, relevant for any assembly destined for a vacuum or sealed enclosure where off-gassing contaminates nearby optics or electronics. TC-9042 shares the aluminum filler but trades the paste consistency for a flowable 9,000–13,000 cP viscosity, cures harder at D82–D92, and reaches a higher 16,000 PSI flexural rating, though its tensile shear runs lower at 1,900 PSI. The practical difference is dispensing behavior as much as final hardness: TC-9033's paste consistency holds its shape for gap-filling and vertical application, while TC-9042's flowable viscosity suits thinner, more controlled bond lines on heat sink and thermal probe assemblies where precise thickness matters more than gap-bridging. Aluminum Nitride Filler Adds an Electrical Property the Other Two Don't Claim TC-9051 swaps the metallic aluminum filler for aluminum nitride — a ceramic that conducts heat efficiently while remaining electrically insulating, a combination the aluminum-filled TC-9033 and TC-9042 don't make the same claim for. That distinction matters directly for any bond line sitting near a live circuit: TC-9051 is formulated specifically for bonding temperature sensors and high-power transistors where the adhesive itself has to move heat away from the component without becoming a path for current leakage or signal interference. It's also the thickest of the three at 35,000–45,000 cP and the softest mechanically, at D70–D80 hardness with 9,000 PSI flexural and 1,400 PSI tensile shear — lower load-bearing numbers than the aluminum-filled grades, reflecting that TC-9051 is chosen for its electrical-insulation property first and its structural contribution second. Worth noting: an application that needs both thermal and electrical conductivity through the same bond line — rather than thermal conductivity with electrical isolation — is a different requirement than any of these three grades are formulated for, and calls for Incure's separate thermally-and-electrically-conductive adhesive line instead. Viscosity Drives Dispensing Method as Much as Cure Chemistry Drives Bond Strength All three grades cure on a similar room-temperature-or-accelerated schedule — roughly 24 to 48 hours at ambient, or 2 hours with a 200°F post-cure step — so the meaningful process variable across the line is viscosity rather than cure time. TC-9042's flowable consistency suits automated dispensing on flat, well-defined bond lines. TC-9033's…

"High temperature epoxy" isn't one formulation — it's a family that spans a 2600°F ceramic resistor coating on one end and a flexible, shock-absorbing clear adhesive on the other, and treating the two as interchangeable is how a rigid coating ends up specified for a joint that needed to flex, or a flexible bond ends up under a load it was never rated for. Incure's Epo-Weld™ high-temperature line covers that full range across twenty grades, organized around service temperature, hardness, and cure schedule rather than a single "high-temp" label. Three Ceramic Coatings, One Spec, Three Colors HTEC-202, HTEC-204, and HTEC-206 share an identical mechanical profile — Shore D80 hardness, 9,500 PSI flexural strength, 2,100 PSI tensile shear, a 24-hour room-temperature cure, and stability to 2600°F — differing only in color (light gray, black, and green respectively). That color difference isn't cosmetic: it's built for coding and identifying resistors and rheostats during dielectric coating and insulation work, where visually distinguishing coated components by type matters on a production line more than any mechanical difference between the three. Porosity Sealing Runs From 900°F to 1500°F HTEC-209, HTEC-284, and HTEC-286 all seal porosity in ceramics and refractories, but at different temperature ceilings and with different optical results. HTEC-209 is a low-viscosity, translucent-white silicone-ceramic sealer rated to 900°F, penetrating deep into porous substrates to seal micro-cracks. HTEC-284 and HTEC-286 both melt into a hermetic glass barrier at higher temperatures — HTEC-284 to 1150°F in an opaque light gray, HTEC-286 to 1500°F in a clear finish — sharing the same D85 hardness and 16,000 PSI flexural rating but diverging on both maximum service temperature and whether the sealed joint needs to stay optically inspectable. Structural Two-Part Grades Split by Hardness and Cure Demand The rigid end of the two-part range — HTE-5361, HTE-5364, HTE-5374, and HTE-6468 — runs Shore D84 to D95, the hardest grades in the line. HTE-5361 is formulated specifically for low-outgas precision alignment work; HTE-5364 cures at room temperature for potting and sealing where an oven step isn't available; HTE-5374 combines a high glass transition temperature with low thermal expansion for bonds that need to hold dimension as they heat; HTE-6468 sets up fast for rapid assembly work. The mid-hardness grades — HTE-5350, HTE-5351, HTE-5352, HTE-5355, HTE-6481, and the HTE-6490/6491 pair — sit at D70 to D85 and split by function rather than hardness alone: HTE-5350 is aluminum-filled for thermal conductivity in heat-sink bonding, HTE-5352 is stainless-steel-filled for corrosion-resistant repair work, HTE-5355 is ceramic-filled for vibration-resistant bonding, and HTE-6490/HTE-6491 — two nearly identical grades differing only in viscosity band — carry the highest tensile shear in the entire line at 6,500 PSI, formulated for high-peel, vibration-exposed joints. HTE-5351 and HTE-6481 are both optically clear, low-viscosity grades built for transparent-component bonding — sapphire windows and glass lenses — where bond-line clarity and light transmission matter as much as strength. At the flexible end, HTE-5354 (D60–D70, the softest two-part grade, at 1,250 PSI tensile) and HTE-5356 (a one-component Shore A38–A48 silicone elastomer, just 500…

A masking resin that tears on removal instead of peeling clean in one piece doesn't just cost rework time — it leaves residue exactly where a plating bath, acid etch, or grit-blast pass needed a clean, protected surface underneath. Incure's Litemask™ line covers that selective-protection step with over thirty grades spanning Shore D10 to D90, built to be chosen by removal method and process chemistry rather than treated as one interchangeable "temporary mask." Most Grade Numbers Are One Formulation at a Different Viscosity A large share of the line repeats the same mechanical profile across a family of viscosity variants — the suffix (T, VT, G) generally signals thixotropy and gel thickness rather than a different chemistry. The 4272 family (4272, 4272T, 4272G, 4272VT) holds identical D79–D89 hardness, 7% elongation, and 10,500 PSI metal-glass tensile across all four, while viscosity spans 3,100 cP up to 70,000 cP — the low-viscosity base grade suits dip or spray masking on simple geometry, while the thixotropic and gel variants stay in place on vertical faces and complex three-dimensional parts without running. The 8188 family (8188, 8188T, 8188G, 8188VT) follows the same pattern at D19–D29 hardness and 180% elongation, spanning 350 cP to 88,000 cP. Recognizing this pattern narrows most selection decisions to "which viscosity does this part's geometry need" rather than requiring a fresh mechanical-property evaluation for every suffix variant. Hardness Splits Into Rigid Barriers and Flexible Plugs At the rigid end — 4129, the 4153 family, 4201, and the 4272 family — hardness runs D78 to D90 with elongation as low as 4%, formulated for sharp edge definition and dimensional stability under aggressive grit blasting or acid immersion. 4272's 10,500 PSI metal-glass tensile is the highest in the line, the profile behind its use in shot-peening masking on aerospace components where edge integrity under abrasive media matters most. At the soft end — 8154, the 8177 family, and 3148 — hardness drops to D10–D25 with elongation up to 250%, built as a flexible, non-sag plug for irregular cavities and threaded features where a rigid mask would crack rather than conform. Starting with which of those two mechanical profiles a given masking step actually needs avoids specifying a rigid barrier grade for a job that calls for a flexible plug, or the reverse. Removal Method Is a Selection Variable, Not an Afterthought The 4153 family is built for process flexibility on removal specifically — Incure's own spec notes it supports mechanical peeling, thermal decomposition (clean burn-off), or aqueous release, letting a line choose whichever removal step fits its existing process rather than being locked into peeling alone. 4129 is formulated specifically around clean-burn thermal removal. Most of the rest of the line is a single-piece mechanical peel, which is faster where it applies but assumes the part geometry allows a full continuous peel without tearing at an undercut or sharp internal corner. Email Us with your substrate, bath chemistry, and preferred removal method, and Incure's engineers can confirm which Litemask™ grade actually fits…

A die-cut gasket adds a part number, a cutting die, and an assembly step just to keep moisture out of an enclosure — and it still leaves a seam where the cut edge meets the housing. Incure's Uni-Seal™ line replaces that with a form-in-place bead that dispenses directly onto the part and cures under UV light in seconds, spanning Shore A5 elastomers to Shore D85 rigid sealants across roughly two dozen grades built for different compression and sealing demands. Two Hardness Families Solve Different Sealing Problems The Shore A grades — 1366, 3301, 3339, and the 3368 family (3368, 3368B, 3368G, 3368GB) — are soft, compressible elastomers running from A01 up to A37, formulated to compress under clamp load the way a rubber O-ring or foam gasket does, delivering IP68-rated waterproofing with genuine give at the seal line. 3339, at A5–A15, is built specifically as a form-in-place gasket replacement for that application. The Shore D grades — 3203, 1348, 3618VT, 3668T, 3718F, 6213HT, 6228, 6243, 6243F, 6313B, and 6322TC — trade compressibility for structural rigidity, functioning more as a hermetic bonded barrier than a compressible seal, suited to connector potting and sensor encapsulation where the joint needs to hold its shape under pressure rather than flex. Starting grade selection with which hardness family the joint actually needs — compressible seal or rigid barrier — narrows the field before viscosity enters the decision. Ultra-Low-Viscosity Grades Wick Into Gaps by Capillary Action A separate cluster — 6322, the 6972 family (6972, 6972R, 6972Y), and the general-purpose 1163 — runs 80 to 500 cP, thin enough to wick into an already-assembled tight gap by capillary action rather than requiring the joint to be filled before mating. Elongation on these wicking grades is exceptionally high — 6972 and its variants reach 630%, 6322 reaches 600% — because a thin capillary-filled seal line has to flex with whatever vibration or thermal movement the joint sees without cracking. 6322R and 6972R add a red tint specifically to aid visual inspection of coverage after wicking, the same inspection logic behind Incure's fluorescing grades below, just using color instead of blacklight. Viscosity Spans Five Orders of Magnitude At the thin end, 3301 runs just 30–60 cP for the lightest wicking work. At the thick end, 3368G and 3368GB exceed 1,000,000 cP — a non-sag, stay-in-place consistency built to hold a bead's shape on a vertical surface through the entire UV exposure without slumping before cure locks it in place. 3339, at 63,000–126,000 cP, sits in between as a genuine form-in-place gasket bead thick enough to bridge gaps without running. 6322TC, at 12,000–24,000 cP, is formulated specifically as a high-viscosity gel that stays in place on a vertical face while bridging gaps up to 5mm — a narrower niche than the 3368 family's broader non-sag range, worth specifying when the gap width is already known rather than defaulting to the thicker general-purpose grade. Matching viscosity to joint orientation — horizontal fill versus vertical or complex housing geometry — matters…

A deep-section casting resin that skins over on top while the center stays soft doesn't fail at the surface — it fails underneath, where a two-part system's slow cure and long pot life leave uncontrolled shrinkage and trapped bubbles no amount of surface polish can hide. Incure's Cast-Max™ line replaces that wait with a single-component urethane acrylate that cures on demand under UV light, across twelve grades built for depth, hardness, and service temperature independently rather than as one fixed formula. Twelve Grades Split Across Two Service-Temperature Bands Eight grades — 1045, 1049, 1404, 2013, 2033, 2063, 2613, and 2664 — are rated −55°C to 80°C, the standard band for indoor electronics, decorative doming, and general encapsulation work. The remaining four — 6755, 7653, 7673, and 7693 — extend to 125–150°C, formulated for potting and casting applications that see sustained heat the standard-band grades aren't rated for, such as encapsulation near power components or under-hood assemblies. Picking a temperature band first narrows the field to roughly a third of the line before viscosity or hardness even enters the decision. Viscosity Runs 400 to 8,600 cP, and It Sets Cavity Depth The two lowest-viscosity grades, 6755 and 7653 at 400–800 cP, are thin enough for shallow, self-leveling fills where bubble release matters more than gap-bridging depth. At the other end, 1049 (4,300–8,600 cP) and 1045 (4,100–8,200 cP) hold their shape in deeper cavities without running off before cure. 2013, at a moderate 1,000–2,000 cP, sits in the range best suited to glob top work over bare dies and wire bonds — flowable enough to self-level around delicate wire geometry without the higher-viscosity grades' resistance to filling tight gaps. Hardness and Elongation Diverge Sharply Across the Line 2013 is the outlier worth naming directly: 120% elongation at Shore D30–D40, by far the most flexible and impact-resistant grade in the range, built to absorb mechanical shock over fragile electronic assemblies rather than resist deformation. 1049 sits at nearly the opposite extreme — just 6% elongation at Shore D81–D91, paired with a 10,300 PSI metal-glass tensile figure that's the highest in the line — a hard, scratch-resistant finish suited to decorative doming where surface durability matters more than flex. 7693, one of the high-temperature grades, reaches 6,500^ PSI tensile on plastics at only 3.5% elongation and uses a cationic epoxy cure mechanism rather than the free-radical acrylate chemistry the rest of the line runs on — a genuinely different cure pathway, not just a different formulation of the same chemistry, worth flagging separately when a process is being qualified around it. Selecting a grade for a specific mechanical outcome means checking where it actually sits on this spread rather than assuming "Cast-Max™" describes one consistent hardness profile. One Grade in the Line Isn't a Casting Resin at All 1404 carries the Uni-Weld™ series name rather than Cast-Max™, and its spec profile reflects that: 5,500 PSI tensile on plastics and 6,000 PSI on metal-glass at just 6% elongation, a structural bonding profile rather than a…

A conformal coating that cures perfectly on the exposed top of a populated board and never fully hardens underneath a tall connector isn't a partial success — it's a coating with an uninspected gap sitting exactly where moisture and flux residue are most likely to collect. Incure's Ultra-Illumina™ line is built around that shadow-area problem specifically, pairing an instant UV surface cure with a secondary cure path that finishes the job where light can't reach. Three Grades Spanning Wicking to Vertical Potting Ultra-Illumina™ 3511 runs 100–200 cP — thin enough to flow evenly across a populated PCB and into fine gaps by capillary action, the profile suited to general-purpose board coating and display lamination where a uniform, low-profile film matters more than gap-bridging. 3552 steps up to 300–600 cP, an aromatic urethane formulation built to absorb thermal-expansion mismatch around power inverters and tight-pitch surface-mount components rather than simply coat over them. At the top of the range, 5454F is a thixotropic, non-sag gel at 11,000–22,000 cP — formulated specifically for vertical boards and high-profile components, where a flowable coating would run or drip before cure instead of bridging the gap it's meant to fill. Selecting among the three starts with board orientation and component height, not with a single default "conformal coating" viscosity. Dual-Cure Closes the Gap Line-of-Sight UV Can't Reach Every grade in the line cures on two independent mechanisms: UV light polymerizes exposed surfaces in seconds, while a secondary heat-cure path finishes the material sitting in shadow — underneath connector bodies, between closely spaced components, and anywhere else the lamp's line of sight doesn't reach directly. That matters because a single-mechanism UV coating leaves exactly those shadowed regions uncured or under-cured, and an uncured region isn't a cosmetic issue on a conformal coat — it's an unprotected path for moisture and contamination straight to the board underneath. Dual-cure is what lets a densely populated assembly get full protection from one coating pass instead of requiring a secondary solvent-cure or oven step layered on top of the UV step. Fluorescent Tracer Turns Coverage Into a Visible Inspection All three grades fluoresce under UV black light, which converts coverage verification from a guess into a direct visual check — an inspector can scan a populated board under blacklight and see immediately where the coating is thin, missing, or absent, without a secondary dye additive or a destructive cross-section. On a high-speed SMT line running continuous coating passes, that's the difference between catching a coverage gap before the board ships and finding it only after a field failure traces back to moisture ingress at an uncoated corner. Elongation and Hardness Track the Job, Not a Single Ideal The three grades sit at genuinely different points on the mechanical spectrum, and each is tuned to the failure mode it's meant to prevent rather than to a universal "tougher is better" standard. 3552 reaches roughly 45% elongation at Shore D65–D75 — enough give to flex with a BGA package corner through thermal cycling…

Plastics don't behave like metal or glass at a bond line — dissimilar coefficients of thermal expansion, lower surface energy, and a much wider range of flexibility mean a single "plastic adhesive" rarely fits every joint. A wicking grade that penetrates a pre-assembled housing by capillary action and a structural grade dispensed before assembly solve genuinely different problems, which is why Incure's Uni-Weld™ plastic bonder line spans both ends rather than offering one formulation for every job. Nine Grades, Wicking to Structural Viscosity across the line runs from 100 cP up to 84,000 cP, and that range maps directly to how the adhesive gets applied. Ultra-low viscosity grades — 3271 at 100–200 cP, 1462 at 250–500 cP, 1453 at 350–700 cP — penetrate already-assembled joints by capillary action, suited to parts that are mated first and bonded second. Mid-range grades like 1417 (5,700–11,400 cP) and 1444 (1,900–3,800 cP) dispense before assembly for gap-filling and structural work. The highest-viscosity grade in the catalog runs 42,000–84,000 cP, formulated for load-bearing structural bonds and potting rather than wicking into a fine gap at all — that same grade also carries the widest service temperature range in the line, rated from −55°C to 150°C against −55°C to 80°C on most of the wicking grades, reflecting its role in higher-demand structural joints rather than delicate capillary-fill work. Picking a grade starts with which of those two application methods the joint actually calls for, not with viscosity as an abstract preference. Elongation Spans Nearly 300x Across the Line The mechanical range is just as wide as the viscosity range, and the two don't move together. 1072, a wicking grade suited to rigid bonding, cures to just 13% elongation and Shore D76–D86 hardness — stiff, dimensionally stable, not built to flex. At the other end, 1483 reaches roughly 3,800% elongation at Shore D50–D60, formulated for joints that need to absorb vibration and thermal expansion rather than resist deformation. 1417 (346% elongation) and 1444 (355% elongation) sit in between, tough enough for structural loads while still damping vibration on solder joints and wire tacking. Selecting a grade for a specific mechanical property means checking its elongation figure directly rather than assuming "structural" and "flexible" describe the same thing — they're opposite ends of this line, not synonyms. Tensile Figures Are Substrate-Limited, Not Adhesive-Limited Grades in this line are rated up to 10,800 PSI tensile strength — but that figure, marked with a fracture indicator in Incure's spec table, reflects the polycarbonate test substrate failing before the adhesive bond does, not the adhesive's own strength ceiling. That distinction matters when specifying a grade for a genuinely high-load joint: the 10,800 PSI number describes what a PC substrate can take before it breaks, which may be a different limiting factor than what the adhesive itself is capable of on a tougher substrate. Every grade in the catalog is tested and reported the same way, so the substrate-fracture caveat applies across the line rather than to one outlier figure — worth…