1.custom sizes,colors,materials 2.non- ... elongation:about 200% Colored clear silicone stopper as follows: 1.Material: 100 % silicone rubber2.Hardness:between 20~80 ... 1)We are the manufacturer specialize in rubber products such as rubber stoppers for more than 10 years,different ... in appliances, motors, tools, cars, trucks, trailers, electronic equipment, toys, bikes, RVs, boats, pumps, furniture and more ...