Rubber Seal(NBR,SBR,EPDM) 1.rubber,silicone seal 2.Nonstandard, custom-made any shape seal 3.Meet SGS,FDS,ROHS,NSF 4.OEM/ ... (NR,BR,NBR,SBR,CR,EPDM etc) rubber seal Features:1. Materials advice: silicone and rubber (EPDM, also NBR, SI, HNBR, SBR, ... , tolerance can be ±5 shore A, for some special products, we can reach ±3 shore A tolerance.8. High ... or as your request. (NR.NBR.SBR.EPDM etc) rubber seal