compression set

compression set

The permanent deformation of an elastomeric sealant, compressed so far that its internal structure is partially or completely destroyed and it no longer will assume its previous shape.
References in periodicals archive ?
Cured parts reportedly retain low compression set under long-term load in direct contact with cooling systems.
TPEs also struggle to match the compression set resistance and creep resistance of vulcanised elastomers.
Compression set at low temperature measures the ability of a robber material to recover after being compressed at a sub-zero temperature.
In its cured state, ELASTOSILA LR 3022/60 ensures excellent sealing properties, since it retains a low compression set, even under long-term load in direct contact with coolants.
Simrit's two new NBR developments are part of its Ventoguard(TM) line of materials specifically designed to offer superior grease and ozone resistance, low compression set and low-temperature capability.
Having a Shore A durometer hardness of 35 +/- 5 and a 9% compression set figure, the gasket's shielding effectiveness is greater than 70 dB between 100 MHz and 10 GHz.
Called INFUSE Olefin Block Copolymers (OBCs), they're said to provide performance and properties beyond current olefin elastomers, including high-temperature performance, abrasion resistance, elasticity and compression set properties at room and elevated temperatures, and fast setup in processing for reduced cycle times.
At temperatures approaching -30[degrees]C NBR o-rings not only lose sealing capacity and exhibit high levels of compression set, but they also become brittle and subject to cracking.
At that temperature, DPT-1197 has a compression set of 20%.
Another requirement was resistance to swelling and compression set, which can affect the orifice diameter.
E[acute accent]According to Dow, INFUSE features a unique block architecture that allows unprecedented control of the polymer chain which results in resins with high flexibility at varying temperatures, faster set-up time, greater elastic recovery, strong compression set performance and improved abrasion resistance.
The results for the compression set demonstrate the advantage of Deoflow Z.