... Good air-proofness & heat resistance 3. Hardness: 30~90 shore A Advantages: Material NBR, NR, EPDM, FKM, SBR, ... black, any color Hardness Silicone: 20~80 Shore A, Rubber 30~95 Shore A Technics designed by 3D high accuracy, almost ... , in the past 9 years we accumulated a lot of work experience We have 8 x ... buyers know te product, the easier they identify a good product, this makes sure our products ...