Rubber Seal(NBR,SBR,EPDM) 1.rubber,silicone seal 2.Nonstandard, custom-made any ... production(NR,BR,NBR,SBR,CR,EPDM etc) rubber seal Features:1. Materials advice: silicone and rubber (EPDM, also NBR, SI, HNBR, ... 3 shore A tolerance.8. High QA/QC system: excellent chemical and physical property, high/low temperature resistance, oil and ... outside, or as your request. (NR.NBR.SBR.EPDM etc) rubber seal