... ,OEM service. 3,Ozone resistance,aging resistance,UV resistance Customized Silicone Rubber Products1, Material:NBR,CR,SBR,EPDM,HNBR,ACM,IIR,NR ... ,EP,Silicone,Viton etc.2, Hardness:Between 30~90 shore A3, Property ... :high/low temperature resistance,oil and fuel resistance,weathering resistance,Ozone resistance etc.4, Certification:ISO9001 ...