With a high material purity, rubber stoppers and bungs are lightweight options to seal containers or apparatuses. Solid styles do not permit any gas exchange in order to protect ultra-sensitive contents, while holed options support unexposed processing. Retaining the characteristic softness even under testing conditions, rubber stoppers are often autoclavable for repeated use. The inserting closures are available in any diameter size to securely fit any desired equipment.

VWR® Two-Hole Rubber Stoppers, Black

Supplier: VWR International

These black, high percentage rubber stoppers are low in free sulfur and have two holes to facilitate laboratory procedures.

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VWR® Pure Gum Rubber Stoppers, Two-Hole

Supplier: VWR International

These highly resilient, pure gum, off-white rubber stoppers have less free sulfur (max

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VWR® Sleeve Stoppers

Supplier: VWR International

Natural rubber stoppers feature a hollow plug to fit inside bottles, flasks, vials, or tubing.

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VWR® Green Neoprene Stoppers, Solid

Supplier: VWR International

Synthetic, neoprene stoppers contain no free sulfur and exhibit good resiliency and shelf-life.

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VWR® Rubber Stoppers

Supplier: VWR International

Versatile rubber stoppers are four stoppers in one.

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VWR® Pure Gum Rubber Stoppers, One-Hole

Supplier: VWR International

These highly resilient, pure gum, amber rubber stoppers have less free sulfur (max

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VWR® One-Hole Rubber Stoppers, Black

Supplier: VWR International

These black high-percentage rubber stoppers are low in free sulfur and have a single hole to facilitate laboratory procedures.

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VWR® Pure Gum Rubber Stoppers, Solid

Supplier: VWR International

These solid, pure gum, amber rubber stoppers contain less free sulfur (max

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VWR® Red Rubber Stoppers, Flanged, Plasticoid

Supplier: VWR International

Permit insertion of hypodermic needles.

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VWR® Solid Rubber Stoppers, Black

Supplier: VWR International

These solid, black stoppers contain a high percentage of pure rubber, weigh less than neoprene, and are low in free sulfur (¹/₂%).

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VWR® One-Hole Kjeldahl Rubber Stoppers, Black

Supplier: VWR International

These black rubber, one-hole stoppers are specifically designed to fit 500 and 800 mL Kjeldahl nitrogen determination flasks.

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VWR® Micro Stoppers

Supplier: VWR International

Select from soft red natural rubber or green neoprene for higher heat resistance.

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VWR® Rubber Stopper Assortment, Black

Supplier: VWR International

This practical, two-pound assortment of black rubber stoppers is ideal for the small laboratory or school with limited need for any one size or style.

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Butyl Rubber Injection Stopper, MicroSolv

Supplier: MicroSolv Technology Corp

Shaped, injection stoppers, butyl rubber used in PerkinElmer Injectors. Use in aluminum or steel crimp caps for headspace autosamplers which are sold separately.

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Rubber Sleeve, Plug-Type Stoppers, Kimble Chase

Supplier: DWK Life Sciences (KIMBLE)

Hollow, plug-type stopper fits into the neck of the apparatus

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Ultrapure Lyophilization Stoppers, Wheaton

Supplier: DWK Life Sciences (KIMBLE)

Wheaton Ultrapure Lyophilization Stoppers are very low moisture adsortion stoppers

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Pluro Stopper, Neoprene, Ace Glass Incorporated

Supplier: Ace Glass

Neoprene stopper for use with filter flasks to support funnels securely.

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WHEATON® Ultra Pure OmniFlex Plus Stoppers

Supplier: DWK Life Sciences (KIMBLE)

The autoclavable stoppers with complete fluorinated Omniflex Plus is manufactured in a silicone free environment. Sleeve style stoppers feature a fold-over skirt for sealing in serum finish vials without a crimp closure.

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Rubber Stopper for Serum Bottles, Ace Glass Incorporated

Supplier: Ace Glass

Rubber stoppers of various styles and rubber compounds for serum vials and bottles

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SureSTART™ Stoppers, 20 mm, Level 2 High-throughput Applications, Thermo Scientific

Supplier: Thermo Scientific

Use Thermo Scientific™ SureSTART™ 20 mm stoppers with crimp vials that have a 20 mm opening and a secure push fit, including our SureSTART 20 mm crimp headspace vials (level 2).