ASTM D2240

ASTM D2240 is a standardized test method used to measure a rubber or elastomer material’s hardness, essentially how resistant it is to indentation or penetration. The most common instrument used is the durometer, which presses an indenter into the material and provides a numerical hardness value. This test helps determine material properties like flexibility and durability, ensuring products like tires, seals, and gaskets meet quality and performance standards. The test is precise, repeatable, and widely used in industries to compare and certify materials for specific applications.