... (NR,BR,NBR,SBR,CR,EPDM etc) rubber seal Features:1. Materials advice: silicone and rubber (EPDM, also NBR, SI, HNBR, SBR, ... High QA/QC system: excellent chemical and physical property, high/low temperature resistance, oil and fuel, water, weathering and Ozone resistance etc ... usually in1- 2 weeksPackage: plastic bag inside, strength carton outside, or as your request. (NR.NBR.SBR.EPDM etc) rubber seal