Understanding Compression Set Results
If the material has good compression set resistance, it will recover sufficiently when the load is released to affect a repeated seal.
It is not necessary for a material to have 100% recovery to produce an effective, repeatable seal. However, if the seal is under constant compression, material recovery is not as important.
Material Differences Matter in Test Results
Due to the special characteristics of the closed cell cellular structure, the compression set test has an entirely different effect on closed cell materials and requires an entirely different interpretation.
See the section below to compare differences in application on open and closed cellular materials.