... Durable;· UL & SGS certification;· Rubber Material: NBR, HNBR, XNBR, EPDM, CR, NR, SBR, VMQ, FKM, LAS, FVMQ, FFKM, PTFE, PU, ECO ... for your items, thanks. Material NameHardnessWorking Temperature (Degrees)Standard materialNBR40~93-55~150N7096, N8000, N9000XNBR50~90-20~125X7000FKM50~90-44~275V7500 ... E7002HNBR55~90-55~150H7000, H8300VMQ25~90 -100~300 S7000, S7031 CR 30~90 -40~125 C7000 FVMQ 45~80-60~232 ...