10PK Neoprene Stoppers, 2 Holes - ASTM - Size #12 - 54mm Bottom, 64mm Top, 25mm Length
Pack of ten #12 stoppers made of long lasting neoprene rubber. Blue color. Each stopper features two holes measuring 5mm in diameter. Manufactured according to sizes recommended by ASTM standards. Each stopper measures 25mm in length, has a base diameter measuring 54mm, and a top diameter measuring 64mm. 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.
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