... ,OEM service. 3,Ozone resistance,aging resistance,UV resistance Rubber Pump Cover1, Material:NBR,CR,SBR,EPDM ,IIR,NR,EP,Silicone ... etc.2, Hardness:Between 30~90 shore A3, Property:high/low temperature resistance,oil and fuel resistance,weathering resistance,Ozone resistance etc ... drawings or samples.8, OEM or ODM is welcomed Rubber Pump Cover