Applications

Dymax MD® 208-CTH-F adhesive for catheter bonding, balloon-lumen sealing, and thermistor potting applications

  • Item Name: Dymax MD® 208-CTH-F

  • Manufacturer: Dymax Corporation

  • Technologies: Light-curable acrylated urethane adhesive, solvent-free, flexible formulation for medical device assembly

  • Color: Light yellow transparent liquid, blue fluorescing under UV inspection light

  • Cure Type: UV/Visible light cure

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: 18 months

1. Product Overview

Dymax MD® 208-CTH-F is a flexible, UV/Visible light-curable adhesive designed for rapid bonding of flexible and rigid plastics commonly used in catheter and medical device manufacturing. It is a solvent-free formulation that fluoresces blue under low-intensity black light (365 nm) to allow in-line inspection. The adhesive cures within seconds when exposed to Dymax light-curing spot, focused-beam, or flood lamps, enabling faster processing, higher throughput, and reduced costs. It complies fully with RoHS Directive 2015/863/EU


2. Applications

The adhesive is widely applied in catheter bonding and related medical assemblies, including:

  • Balloon-to-lumen bonding

  • Hub-to-lumen bonding

  • Marker band attachment

  • Thermistor potting

3. Typical Properties

Category Property Value Test Method
Uncured Solvent Content No Nonreactive Solvents N/A
Chemical Class Acrylated Urethane N/A
Appearance Light Yellow Transparent Liquid N/A
Density (g/ml) 1.01 N/A
Viscosity (cP, 20 rpm) 225 (nominal) ASTM D1084
Cured Mechanical Durometer Hardness D55 ASTM D2240
Tensile Strength (MPa [psi]) 9 [1,300] ASTM D638
Elongation at Break (%) 250 ASTM D638
Modulus of Elasticity (MPa [psi]) 69 [10,000] ASTM D638
Other Cured Properties Refractive Index (20 °C) 1.49 ASTM D542
Boiling Water Absorption (2 h, %) 4.2 ASTM D570
Water Absorption (25 °C, 24 h, %) 4.7 ASTM D570
Linear Shrinkage (%) 2.0 ASTM D2566
Glass Transition Temperature (Tg, °C) 62 DSTM 256‡

‡ DSTM = Dymax Standard Test Method

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