Holiday Update:
Fiber Optic Center will be closed December 24 and 25.
Due to potential early carrier pickups, PLEASE HAVE ALL ORDERS IN BY NOON ON MONDAY, DECEMBER 23.


We will resume our regular business hours on Thursday, December 26.

Fiber Optic Center will be at Photonics West - Schedule your meeting with a member of the FOC team now

EPO-TEK® 302-3M Transparent Epoxy, Room Temperature Cure (2.5g)

ET302-3M-2.5G

EPO-TEK® 302-3M General Bonding, Room Temperature Cure, 2-Part Epoxy, 2.5 Gram Packet
The EPO-TEK® 302-3M Transparent Epoxy is a two component epoxy used for optical, fiber optic, and semiconductor applications. The epoxy is good for adhesive joining, sealing, potting, or as a coating. 2.5g packet.

Features:
  • Clear and colorless epoxy
  • Passes NASA low outgassing standard ASTM E595 with proper cure
  • Recommended Cure: 65°C / 3 Hours
  • Pot life: 1 Hour
Physical Properties:
  • Consistency: Pourable liquid
  • Viscosity (23°C): 800 - 1,600 cPs
  • Glass Transition Temperature, Tg: ≥ 55°C (degree Celsius); ≥ 131°F (degree Fahrenheit)
  • Shore D Hardness: 80
  • Coefficient of Thermal Expansion (CTE):
    • Below Tg: 56 x 10-6 in/in°C
    • Above Tg: 193 x 10-6 in/in°C
  • Suggested Operating Temperature: < 250 °C (Intermittent); < 482°F 
Optical Properties:
  • Spectral Transmission: > 95% @ 460-1620 nm
  • Refractive Index (uncured): 1.5446 @ 589 nm
See Datasheet for additional properties and application notes