How do I choose the correct durometer ?
The ASTM D2240 standard covers type A, B, C, D, DO, E OO and OOO durometers. The most popular durometers are types A and D. Type A is often used for rubber and soft plastics while type D is used for harder materials such as bowling balls and thermo plastics. If your application is not covered by a type A or type D durometer, one of the others may be used. Please see Tech Notes for a full listing of the different types of durometers and suggested applications.