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 your finishing line.

Fluorescing and Tinted Grades for Coverage Verification

4813VTR and 4915 fluoresce under UV blacklight, the same inspection approach used across Incure’s Ultra-Illumina™ conformal coating and Uni-Seal™ gasket lines, letting an inspector confirm full mask coverage before a part goes into a plating or acid bath rather than after a defect surfaces downstream. 3148, 1128, and 3318R instead use a simple blue or red tint for high-contrast visual inspection against the substrate — a lower-cost verification method that doesn’t require a blacklight but relies on the operator’s eye rather than fluorescence.

One Grade Extends Past the Line’s Standard Temperature Ceiling

Every grade in the Litemask™ line is rated down to −55°C, but only 8151 extends up to 125°C service temperature — the rest of the line tops out at 80°C. That distinction matters specifically for masking steps that run near a heat source or inside a finishing bath that itself operates hot; specifying a standard-range grade for that kind of process risks the mask softening before the process step is complete.

Cure Equipment

Litemask™ grades cure in the 365–405 nm UVA range, compatible with Incure’s L9000™ UV LED spot lamp and L-Series™ UV LED flood lamps for inline masking stations ahead of plating, grit-blast, or chemical-milling steps.

Where the Line Fits

Selective electroplating masking is the core use case — protecting machined features and threaded bores from plating solution while leaving target surfaces exposed, with the rigid, sharp-edge grades holding a precise plating boundary. Grit blasting and shot peening on aerospace and industrial components draw on the highest-tensile rigid grades to survive high-pressure abrasive media without edge lift. Chemical milling and etching depend on the acid-resistant barrier grades to protect masked regions through extended immersion in aggressive baths. Powder coating and finishing lines use the flexible plug grades to protect threaded holes and internal cavities that a rigid mask can’t conform to without cracking. General precision component protection during multi-step finishing processes — where a part moves through several surface treatments in sequence — benefits from choosing a single grade whose removal method fits every downstream step, rather than re-masking between stages.

Contact Our Team to confirm the Litemask™ grade for your process chemistry and removal method.

Visit www.incurelab.com for more information.