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Rubber lab stoppers: RubberMill provides one hole lab stoppers, two hole lab stoppers and solid laboratory stoppers.

RubberMill provides solid rubber lab stoppers, one hole lab stoppers and two hole rubber lab stoppers in standard and custom sizes. RubberMill produces rubber stoppers for the scientific, commercial and industrial markets. Our standard grade stoppers are manufactured from a premium grade SBR black rubber compound. The 40 ± 5 durometer material is soft, pliable and long lasting. Solid, one-hole and two-hole stoppers are stocked for immediate shipment.

Please select from the following options and click for more information on our standard stopper sizes.
Solid Stoppers
One Hole Stoppers
Two Hole Stoppers

In addition to our standard stocked items, we manufacture custom stoppers in all durometers and compounds. Tapered rubber stoppers are the most common configuration, but we can provide any shape bung or stopper you need for labware, bottles, boiler tubes, flasks, test tubes or similar containers. Contact us for more information.

Visit our Design Illustrations Guide to specify your stopper needs.

RubberMill is a trusted supplier of tapered rubber stoppers for industrial, scientific, educational, medical and other applications. There are many rubber stopper styles available: standard solid rubber stoppers, one-hole stoppers and two-hole stoppers are the most common. RubberMill offers stock in black rubber compound or can custom mold other material required including SBR, EPDM, Neoprene, Nitrile (Buna-N), silicone, Viton ™, urethane, FDA approved compounds. Tapered rubber stoppers are the most common configuration, but we can provide any shape bung or stopper you need for labware, bottles, boiler tubes, flasks, test tubes or similar containers.