Compression Set

Materials that are exposed to a variety of static stresses under different environmental conditions must be evaluated for their elastic performance in order to determine the best fit for a given application.

Products such as o-rings, vibration dampers, seals and gaskets must be able to retain their elastic properties after stresses in order to meet certain operating specifications.

Compression set testing applies stresses to the sample over a specified period of time in order to measure elasticity. Compressive stresses can be applied in both an air and liquid environment and are also generally carried out at elevated temperatures in order to accelerate the effects. In some cases, tests are undertaken at sub-zero temperatures to evaluate the reaction in that environment.

Smithers Rapra assists clients with choosing the correct standard protocol or in the development of a custom program designed to better predict the performance of a given material. 

Sample Preparation

The presence of our extensive sample preparation capabilities which include the thickness reduction of rubbers by slitting/buffing ensure we are able to test a huge variety of materials and product forms. 

Environmental Capabilities

Within our temperature chambers we are able to assess these properties over the temperature range of -50°C upto 300°C.

Please contact us to discuss your needs, for more information or to request a quote.

Common Test Protocols


Standard Test Methods for Rubber Property—Compression Set

ASTM D1414

Standard Test Methods for Rubber O-Rings

ISO 815

Rubber, vulcanized or thermoplastic -- Determination of compression set

DIN 53517

Testing of Rubber and Elastomers; Determination of Compression Set after Constant Strain