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 ?
Moreover, white silica-filled compounds, at least if used in AEM or ACM compounds, suffer from worse compression set due to certain interactions of the curing site with the hydroxyl groups on the surface of the silica.
Material failure: Causes are compression set, thermal and chemical degradation, incorrect hardness, or wrong choice of elastomer.
A low hardness thermoplastic elastomer is said to exhibit better performance than that of thermoplastic vulcanizate widely used in weatherseals by providing higher tear strength, lower compression set and cost benefits.
While standard compression-set tests of Septon V9000 yield results equivalent to standard olefinic TPVs, long-term (1000-hr) compression set is said to be much better for the new SBCs.
Molded parts made from this silicone are said to be resistant to heat and coolant, and exhibit low compression set even under permanent stress.
Compression set at low temperature measures the ability of a robber material to recover after being compressed at a sub-zero temperature.
The materials have around 20% compression set after 22 hr at 120 C vs.
These compounds are said to be characterized by high tensile and tear strength, good compression set and good heat aging properties.
It does not scorch, is non-staining, and is well suited to low-density foams where low compression set is desired.
DOTG does a good job of speeding up the cure rate and it has an added benefit in that it significantly improves the compression set.
According to Novamont, vertical compression set of the foam is 10%, compressive creep is less than 15%.