ISO 2921
Rubber, vulcanized -- Determination of low-temperature retraction (TR test)


ISO 2921 establishes the methodology for determining stress relaxation resistance in vulcanized elastomers and rubber materials when subjected to prolonged compression at elevated temperatures. The standard applies to elastomeric materials maintained under constant deformation in specified thermal conditions, enabling assessment of their ability to retain elasticity over time. The test principle involves applying sustained static compression and measuring the resulting stress decay, delivering critical performance data for high-temperature applications and ensuring material reliability in demanding service environments.


ISO 2921 standard webpage
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