ASTM D1415 - Rubber Property—International Hardness

 

We perform rubber quality and conformance testing by ASTM D1415 to measure the hardness of vulcanized or thermoplastic rubber, including rubber o-rings. The hardness is obtained by the difference in penetration depth of a specified dimension ball under two conditions of contact with the rubber: (1) with a small initial force and (2) with a much larger final force. The differential penetration is taken at a specified time and converted to a hardness scale value.

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For additional information on this test method or to purchase a copy of the method, please click HERE to open a new window and visit the ASTM website.