... automotive parts Masking products line include silicone cap, silicone plug and other masking products.Each products has lots of optional size ... several times. We making silicone flangness plug which can be used in automotive industry.Rubber Parts,Auto Parts,Plastic parts, ... sizes, colors(such as Clear, White, Red, Blue and so on)and material are optional. 10.Silicone,Viton,Neoprene,Hypalon, ...