Rubber Stopper Assortment, solid, assorted, one pound, color: black, are made of solid natural rubber that stays pliable over a long period of time, use with non-aggressive or concen solutions, Low sulfur content, temperatures from -25 to 70 deg, size: 1 to 6
Stopper, Solid Blue ASTM, neoprene ASTM, Bottom 62mm, Top 75mm, Length 35mm, are made from long lasting neoprene rubber, and are oil resistant, Can be used up to temperatures of 250 deg F / 120 deg C, Size: No 13.5, pack of 10