Hardness ChartDurometer Chart & Comparisons
Durometer measures the hardness in polymers, elastomers and rubbers. Hardness may be defined as a material’s resistance to permanent indentation. The durometer scale was defined by Albert F. Shore, who developed a measurement device called a durometer in the 1920s. A chart showing general hardness comparisons is below. Some of HAPCO’s materials are available in both Shore A and Shore D.