... , FLS, CR, SBR, SI, BR, IR, EPDM, IIR, PU,E/A, ECO, CSM, VITON, FKM, FPM, etc.2. Characteristics: oil proof ... : 30~90 shore A or IRHD as your request, tolerance is ± 5 shore A, and can be ±3 shore A for special products.4 ... . Production lead time: 1~2 weeks.13. Small order quantity is welcomed. O-Ring Assortment