... :rubber /PVC/EPDM Seal Rubber assorts performance :1.good sealing performance ,no gap2. no smell ,anti-oil ,dusty3 ... Rubber Foam RubberHard Rubber 1.material :Silicone, CR, EPDM, Viton, TPE, PVC, NBR, etc2.Durability and environmental production ... blue .any colorAdvantage:Dust insect-resistant , waterproof ,fixed , sealing ,Sound insulation ,damping ,Resistant acid-baseantiage ,more flexble,antioxidant ...