EISCO 10PK Neoprene Stoppers, 1 Hole - ASTM - Size: #4-20mm Bottom, 26mm Top, 25mm Length - Suitable for use with Petroleum, Oils & Most Inorganic Acids and Bases

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🔬 Elevate Your Lab Game with EISCO Stoppers!

The EISCO 10PK Neoprene Stoppers are expertly crafted, ASTM-compliant rubber stoppers designed for durability and chemical resistance. With a size of #4, these stoppers are ideal for various laboratory applications, capable of withstanding temperatures from -40 to 130°C. Manufactured by Eisco Labs, they ensure quality and reliability for all your scientific needs.