... 4.good sealing performance 5.material:rubber /PVC gasket for aluminium windows Rubber assorts performance :1.good sealing performance ,no gap2 ... ' design, such as rubber tube, rubber cord, door and window seals, weather strip, u channle, glazing rubber seals,all shapes ... control1. All rubber seal must comply to strict quality examinations for sizes2. All products are inspected by measures and eyes ...