... % silicone,ware-resisitance,durbale,harmless to body2.Applications:mobile phone,computer keypads,calculator,hand-held games.remote control for TV or ... or samples.4.Hardless:8 to 95 store A,tolerance can be +/-5 shore A,for some special products,we can reach +/-3 ... shore A tolerance.5.About the key coating,epoxy-coating or soft epoxy or ...