ASTM D 395 - 16ε1 Standard Test Methods for Rubber Property - Compression Set

Current edition approved April 15, 2016. Published May 2016. Editorially corrected 1.1 in March 2017. Originally approved in 1934. Last previous edition approved in 2015 as D395 – 15. — 8 p.
These test methods cover the testing of rubber intended for use in applications in which the rubber will be subjected to compressive stresses in air or liquid media. They are applicable particularly to the rubber used in machinery mountings, vibration covered as follows:
A - Compression Set Under Constant Force in Air
B - Compression Set Under Constant Deflection in Air
C - Compression Set Under Constant Deflection in Air Considering Material Hardness
The choice of test method is optional, but consideration should be given to the nature of the service for which correlation of test results may be sought. Unless otherwise stated in a detailed specification, Test Method B shall be used.
Test Method B is not suitable for vulcanizates harder than 90 IRHD.