Durometers use a specific scale, the durometer hardness scale, for measuring the hardness of rubber, sponge rubber, plastic, and other nonmetallic materials. The durometer hardness scale is an ...
O-ring Hardness (Durometer): 30 durometer; 45 durometer; 50 durometer; 55 durometer; 60 durometer; 70 durometer Synthetic Rubbers: Silicone Rubber; Vinyl, Chloroprene O-ring Size: Available in all ...