... 1. Unmatchable price2. Available material: material for Silicone, NBR, VITON (FKM), Neoprene, HNBR, Natural rubber, ACM EPDM, etc3. All manufacturing processes confirm ... resistant, ozone resistant, UV resistant, aging resistant, weather resistant, good insulation property, anti-toxic, good air-permeable, etc.5. Hardness: 25 ...