... . 1) Available materials: NR, SBR, BR, NBR, EPDM, IIR, CR, silicone, ACM, FKM (Viton) and more;2) Hardness: as per your ... resistance, rebound resistance, gas, impermeability resistance, oil and fuel resistance, acid resistance, water resistance;6) Quality certificate: ISO9001:2000;7)Our ...