Compression Set Test
Posted on 31/12/2018 Category:
A cylindrical button of rubber of known thickness is compressed to a fixed height (typically 70% or 75% of its original height) at a defined temperature for a specific period of time. The button is then released, allowed to recover (typically for 30 minutes) and the thickness is measured. Compression Set is the height that is not recovered expressed as a percentage of the amount by which it was compressed.
