... *20mmAppearanceas your requirment Heavy Rubber Base colourBlack or as your requirment Heavy Rubber Base MaterialNR NBR SBR EPDM, recycled rubber etc. DuroSilicone about 20 ... : We are making all kinds of rubber products ,such as rubber gaskets ,rubber grommets,rubber sheets, rubber balls ,vibration dampers ,rubber hoses ,rubber bellows,rubber tyres ,rubber grips,rubber stoppers,rubber feet ,which ...