Flex 80

(3 reviews) Write a Review

Flex 80 is an extremely tough yet still flexible urethane rubber that is a great product for duplicating or casting hard rubber parts.

  • Has a shore hardness of 80-85 A
  • Vacuum or pressure is recommended for bubble-free castings
  • White dye must be used with translucent dyes to make opaque-colored castings

Prior to using product, please read all Technical Data, Safety Data, and Instruction sheets linked below.



Maximum Purchase:
2 units

Technical Specifications

Flex 80
Translucent Yellow
Mix Ratio:
1:1 by weight
Pot Life:
4 minutes
Demold Time (100 gram mass):
2 hours
Mixed Viscosity (cps):
Specific Gravity:
Shore Hardness (ASTM D2240):
80-85 A
Shrinkage (in./in.):
Tensile Strength (ASTM D638, psi):
Elongation (in./in.):


  • 5
    Flex 80

    Posted by Bill on Sep 10th 2021

    Very good cure times, holds shape and has the hardness of a rollerblade wheel.

  • 5
    Flex 80 Is great

    Posted by Joe on Aug 26th 2021

    I am making homemade disc for Disc Golf and this stuff is PERECT. Once set, the consistency was amazing. Can't rip it for the life of me. So strong.... highly recommend !

  • 4
    Sets FAST

    Posted by DK on Oct 4th 2020

    Excellent rubber epoxy. Dense, flexible, transparent and easy to remove from molds. Sets very fast, 4 minute work time.