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EISCO (Pack of 10) Neoprene Stoppers, Solid - ASTM - Suitable for use with Petroleum, Oils & Most Inorganic Acids and Bases - Size: #4-20mm Bottom, 26mm Top, 25mm Length

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  • SOLID NEOPRENE STOPPERS || Pack of 10 solid, long lasting neoprene rubber stoppers
  • ASTM || Stoppers are manufactured according to sizes recommended by ASTM standards
  • SIZE #4 || Stopper measures 25mm in length, has a base diameter measuring 20mm, and a top diameter measuring 26mm
  • CHEMICAL & TEMPERATURE RESISTANT || 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
  • MANUFACTURED BY EISCO LABS || Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind


Pack of ten #4 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 20mm, and a top diameter measuring 26mm. 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.
Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind.