compression set

Compression set and low temperature flexibility may be affected negatively.

This has the formal name Compression Set Under Constant Force in Air.

There are two ways this is normally measured; compression set A and compression set B.

In compression set A a force of 1.8 kN is applied to the specimen for a set time at a set temperature.

It provides superior heat resistance, improved hydrolytic stability and better compression set than diamine curing.

In short, the higher the cetane number the more easily the fuel will combust in a compression setting (such as a diesel engine).

The compression set (ASTM D395) of a material is the permanent deformation remaining when a force (that was applied to it) is removed.

Other applications include domestic water heaters, compression packaging, wire and cable, shoe soles and polyolefin modification (thermal bonding, enhancing softness and flexibility of rigid compounds, increasing temperature resistance and compression set of soft compounds).

Liquid silicone rubber is a high purity platinum cured silicone with low compression set, great stability and ability to resist extreme temperatures of heat and cold ideally suitable for production of parts, where high quality is a must.

Silicone rubber offers good resistance to extreme temperatures, being able to operate normally from 55 C to +300 C. At the extreme temperatures, the tensile strength, elongation, tear strength and compression set can be far superior to conventional rubbers although still low relative to other materials.

The compound is available in hardness grade from 35 Shore A to 60 Shore D. It has good compression set at room temperature and moderate performance at high temperature up to 135 C. Service temperature is 135 C (permanent) and 150 C (temporary).