... ~+120c 3.material: Epdm,Nbr,Silicone,Fkm,etc. 4.AS568 in Shore A/IRH Rubber o ring:O-Ring is used as static and dynamic seals for ... ,SILICON PTFE,HNBR,PU etc. Feature of O-Ring : 1. Several material f or oil seal, O-Ring and rubber gasket like: NBR, HNBR, CR ... seal, also can make on your size. 5. Optional color for you of the oil seal, O-Ring and rubber gasket: Black, red, yellow ...