Most disposable and external device assemblies do not need an exotic adhesive. They need one reliable, single-part grade that bonds the common plastics, cures without equipment, and comes with the biological-safety documentation the device file requires. Incure Cyro-Weld™ CM-110 is built to be that default choice.

The Case for a General-Purpose Grade

Specialized adhesives solve specific problems, but every extra grade on the floor adds inventory, training, and validation overhead. A low-viscosity, broad-substrate cyanoacrylate covers the majority of housing seams, connector locks, and small-part attachments in one line item. CM-110 is that grade in the Cyro-Weld™ CM series: single-component, room-temperature curing, and formulated to meet ISO 10993-5 for cytotoxicity. It is intended for external, disposable, and wearable components, not implanted parts.

Incure Cyro-Weld™ CM-110 at a Glance

• Chemistry: single-component, room-temperature-cure cyanoacrylate
• Viscosity: low, for easy placement and penetration into tight joints
• Fixture speed: seconds to tens of seconds depending on substrate and humidity
• Bond strength: up to roughly 3,400 psi on suitable substrates
• Substrates: ABS, polycarbonate, acrylic, many filled resins, cured rubbers, and prepared metals
• Biological safety: formulated to meet ISO 10993-5 for cytotoxicity
• Sterilization: compatible with validated ethylene oxide and gamma processes; confirm with Incure

Where CM-110 Fits

• Device housings: bonding molded enclosure halves on handheld and benchtop instruments
• Connector retention: locking fluid and electrical connectors against back-off on disposable sets
• Internal structure: attaching ribs, bosses, and brackets inside a housing
• Accessory assembly: joining small molded parts in kits and consumables

For low-surface-energy plastics such as polypropylene, prime first. For a structured approach to matching a grade to substrate and load, see matching adhesive grade to substrate and mechanical demand.

Process Control

Clean parts to remove mold release and handling oils; this is the highest-leverage step for consistent bonds. Dispense a metered drop on one face, mate within the open time, and hold light even pressure until handling strength develops. Full strength builds over 24 hours. Keep shop humidity between 40 and 60 percent. Use an activator on primed polyolefins or where a small gap needs quick fill, understanding that activator slightly lowers ultimate strength.

Where a housing bonds two different materials, expansion mismatch loads the joint across temperature and shipping conditions; review how CTE mismatch causes adhesive bond failure before finalizing the geometry. Keep the bond line thin and uniform, design the joint to work in shear rather than peel, and add a mechanical feature such as a snap or a boss to carry peak load so the adhesive is resisting back-off and vibration rather than the full working stress.

Storage, Shelf Life, and Handling

Store unopened CM-110 refrigerated at 2–8°C and warm each bottle to room temperature before opening so condensation does not enter and shorten its working life. Reseal tightly after every use, keep the air headspace low, and use within the opened shelf window on the label. Rotate stock first-in-first-out and record lot numbers in the device history record. Dispense in a ventilated station with nitrile gloves and eye protection, and keep water and activator available to cure spills before cleanup.

Consolidating Grades: What to Check First

Before you replace three adhesives with CM-110, run a bridging study. Bond each of the joints currently covered by the outgoing grades using CM-110, then subject the samples to your full test matrix: initial strength, aged strength, sterilized strength, and any environmental conditioning the device requires. Pay particular attention to the joint that drove the original grade choice, since that is where a general-purpose adhesive is most likely to fall short. Document the comparison so the change is defensible in an audit.

Validation and Documentation

Incure supplies technical data sheets, ISO 10993-5 test summaries, and sterilization guidance to support your submission, but the finished-device manufacturer owns the overall biological evaluation. Run aged and sterilized bond-strength testing on production parts. Record failure modes during qualification: substrate tear or split adhesive indicates a sound bond; a clean release at one face points to contamination or incomplete cure.

For help consolidating several adhesives into one qualified grade, Email Us with your current bonding list.

Frequently Asked Questions

Q: Can CM-110 replace several grades we currently run?
A: Often, yes, for standard plastic and elastomer joints. Ultra-tight fits, wide gaps, and heavy vibration may still warrant a specialized CM grade.

Q: How long until we can package parts?
A: Handling strength comes in seconds; full strength and stable outgassing take up to 24 hours. Add end-of-line dwell before sealed packaging.

Q: Does it bond metal-to-plastic?
A: Yes, with proper cleaning. Design the joint for shear and account for expansion mismatch between the two materials.

A dependable general-purpose medical cyanoacrylate reduces complexity on the floor without cutting corners on documentation. Incure Cyro-Weld™ CM-110 fills that role. Contact Our Team to request samples and technical data.

Visit www.incurelab.com for more information.