Silicone Jar Seal Gasket 1,FDA,ROHS Certificated. 2,OEM service. 3,Ozone resistance,aging resistance,UV resistance Silicone Jar Seal Gasket1, Material:NBR,CR,SBR,HNBR,ACM,EPDM,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:ISO9001:2008,ROHS,FDA5, ...