Property ASTM Method Sample Dimensions (thickness) Conventional PTFE (Literature) Gore PTFE
(Test Data)
Flex Life
(MM cycles)
ASTM-D-2176 0.020in  0.600in 4.1 70+*
Impact Strength
(ft lbs/in)
ASTM-D-256 0.220 in 2 – 3.5 30.4
Tensile Strength (psi) ASTM-D-638 0.220 in 4000-5200 14920
Mullins Burst (psi) ASTM-D-3786 0.020 in 180** 540
Tensile Creep
(1000 hr  1000 psi)
ASTM-D-2990 0.100 in 20%-30%** 9%-10%

Sample dimensions are given to compare conventional PTFE to Gore’s PTFE for testing purposes and do not represent actual diaphragm dimensions.

* Test was stopped over time
** Actual test results for conventional PTFE film.