1,Fast delivery 2.Aging,High & low temperature resistance, 3.Design service 4.ROHS,UL,FDA,ISO9001:2008; 5,OEM Service Rubber Silicone Sleeve1, Material: NBR,CR,SBR,EPDM,IIR,HNBR, ACM,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:ISO9001:2008,ROHS, FDA.5, ...