Rubber Seals Kit: 1,FDA,ROHS Certificated. 2,OEM service 3,Ozone resistance,aging resistance,weather resistance Rubber Seals Kit:1, Material:NBR,CR,SBR,EPDM,HNBR, ACM,IIR,NR,EP,SIL,FKM etc.2, Hardness:Between 30~90 shore A3, Property:high/low temperature resistance, oil and fuel resistance, water resistance,weathering resistance, Ozone resistance etc.4, Certification:ISO9001:2008,ROHS,FDA5, ...