Compression Set

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

Products such as o-rings, rubber seals, gaskets, and vibration dampers 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 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 an extremely cold environment.

Our experts can assist 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

Our extensive sample preparation facilities can test a huge variety of materials and product forms and are equipped with a CNC machine, on-site moulding, and slitting and buffing equipment to reduce rubber thickness.

Environmental Capabilities

Our labs are equipped with a bank of extensive temperature chambers and can assess properties in a temperature range from -50°C to 300°C.


For more information, please contact us.

Common Test Protocols

ASTM D395

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

Accreditation