... , SBR, VITON, EPDM, HNBR, SILICONE, BUNA, AEM, etc. 2. ISO9001 3. Prompt delivery: 1 week OEM silicone rubber stopper MaterialNR,CR,NBR,SBR ... , SILICONE,VITON,EPDM, HNBR, BUNA, etc.Hardness30degree-90degreeMode of productionCompression and injectionProduction CapabiltyRubber compression ...