... ,SBR,EPDM) 1.rubber,silicone seal 2.Nonstandard, custom-made any shape seal 3.Meet SGS,FDS,ROHS,NSF 4.OEM/ODM ... mass production(NR,BR,NBR,SBR,CR,EPDM etc) rubber seal Features:1. Materials advice: silicone and rubber (EPDM, also NBR ... , or as your request. (NR.NBR.SBR.EPDM etc) rubber seal