10PK Neoprene Stoppers, Solid - ASTM - Size: #13 - 58mm Bottom, 68mm Top, 25mm Length
Pack of ten #13 stoppers made of solid, long lasting neoprene rubber. Blue color. Manufactured according to sizes recommended by ASTM standards. Each stopper measures 25mm in length, has a base diameter measuring 58mm, and a top diameter measuring 68mm. The neoprene rubber construction is suitable for use with petroleum products, minerals, oils and fats, as well as most inorganic acids and bases. Resistant to temperatures ranging from -40 to 130°C.