Black Rubber Conical Stoppers (12.5mm, 5 Pack)

Title: Black Rubber Conical Stoppers (12.5mm), 5 Pack

Description: These high-quality, black rubber conical stoppers are ideal for sealing a variety of laboratory glassware, including flasks, test tubes, and jars. Each stopper measures 22.5mm in height, with a larger diameter of 15mm, a smaller diameter of 10.5mm, and a mid-point diameter of 12.5mm. Manufactured from a thermally and chemically resistant rubber compound (GOST 7852-76, 23-6-3), these stoppers are durable and reliable. Please note: these stoppers have a characteristic rubber odor. Consider this when using them for non-laboratory applications. This 5-pack provides a convenient supply for your needs.

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