3311-M Medical Catheter Tubing UV Adhesive 250 mPa.s Low Viscosity Shore A 55 Flexible PVC PU Bonding

3311-M Medical Catheter and Tubing UV Adhesive

3311-M is a low viscosity UV light curing adhesive developed for flexible bonding of medical tubing and catheter assemblies. Its 250 mPa·s viscosity flows into narrow gaps and thin bond lines between PVC and PU components, while Shore A 55 softness keeps the cured joint flexible after repeated bending, coiling and sterilization cycles.

The adhesive cures to a clear, transparent film within seconds under UV LED light, enabling high throughput automated assembly of catheters, infusion tubing, balloons and connectors.

Key Features

• Low viscosity 250 mPa·s for capillary gap filling and thin bond lines
• Shore A 55 softness keeps joints flexible under bending and coiling
• Strong adhesion to PVC, PU and common medical grade plastics
• Fast UV LED curing for high speed automated assembly
• Clear transparent cured film for invisible joints
• Solvent free formulation, low odour
• Compatible with dispensing valves and needle systems

Applications

• Medical catheter assembly
• Infusion and drainage tubing bonding
• Balloon and connector bonding on flexible medical devices
• PVC to PU plastic bonding
• Disposable medical device assembly

Technical Specifications

Recommended Curing System

Compatible with UV LED curing systems. Select wavelength, irradiance and exposure time according to the spectral response of the adhesive and the actual bonding conditions. Keep bond lines thin and shielded from ambient light before curing to avoid premature gelation.

Why Choose This Adhesive

Compared with rigid structural adhesives, 3311-M keeps catheter joints soft and compliant so that tubing does not kink or stress-crack at the bond line. The low 250 mPa·s viscosity wets narrow lumens evenly, reducing voids and leak paths in single-use medical assemblies.

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