... rubber o ring industrial o ring epdm o ring food grade,cr,epdm,viton,neoprene,nbr,NR reliable manufacturer,good quality √ material: EPDM, SBR,CR, NBR, NR,silicone rubber ... ;√ hardness: shore A 30-90;√ Application: automotive, industrial, medical, agricultural,etc;√ molding: compression, injection, transfer;√ Different colors and shapes are available ...