... products 4.good sealing performance 5.material:rubber /PVC gasket for aluminium windows Rubber assorts performance :1.good sealing performance ,no ... Hard Rubber 1.material :Silicone, CR, EPDM, Viton, TPE, PVC, NBR, etc2.Durability and environmental production , no bad smell , ... . All rubber seal must comply to strict quality examinations for sizes2. All products are inspected by measures and eyes ...