... *20mmAppearanceas your requirment Heavy Rubber Base colourBlack or as your requirment Heavy Rubber Base MaterialNR NBR SBR EPDM, recycled rubber etc. DuroSilicone about 20 ... 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 are ...