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® Pure Gum Rubber Stoppers, Two-Hole
These highly resilient, pure gum, off-white rubber stoppers have less free sulfur (max
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VWR® Two-Hole Rubber Stoppers, Black
These black, high percentage rubber stoppers are low in free sulfur and have two holes to facilitate laboratory procedures.
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VWR® Sleeve Stoppers
Natural rubber stoppers feature a hollow plug to fit inside bottles, flasks, vials, or tubing.
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VWR® Pure Gum Rubber Stoppers, One-Hole
These highly resilient, pure gum, amber rubber stoppers have less free sulfur (max
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VWR® Green Neoprene Stoppers, Solid
Synthetic, neoprene stoppers contain no free sulfur and exhibit good resiliency and shelf-life.
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VWR® Pure Gum Rubber Stoppers, Solid
These solid, pure gum, amber rubber stoppers contain less free sulfur (max
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VWR® One-Hole Rubber Stoppers, Black
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® One-Hole Kjeldahl Rubber Stoppers, Black
These black rubber, one-hole stoppers are specifically designed to fit 500 and 800 mL Kjeldahl nitrogen determination flasks.
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VWR® Solid Rubber Stoppers, Black
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® Rubber Stopper Assortment, Black
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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VWR® Micro Stoppers
Select from soft red natural rubber or green neoprene for higher heat resistance.
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Butyl Rubber Injection Stopper, MicroSolv
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
Hollow, plug-type stopper fits into the neck of the apparatus
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Rubber Stopper for Serum Bottles, Ace Glass Incorporated
Rubber stoppers of various styles and rubber compounds for serum vials and bottles
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WHEATON® Ultra Pure OmniFlex Plus Stoppers
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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Gray Butyl Rubber Stoppers, Kimble Chase
These gray butyl rubber stoppers are designed for aluminum seal finish vials.
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Rubber Stopper for Serum Bottles and Vials, Ace Glass Incorporated
Gray, thin, flange-style chlorobutyl rubber stopper fits all 20 mm serum bottles and serum vials.
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Butyl Rubber Two-Leg Stopper, Wheaton
Lyophillization stopper made from grey butyl rubber, for use with WHEATON® Vacule® Lyophillization ampule.
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Ultrapure Lyophilization Stoppers, Wheaton
Wheaton Ultrapure Lyophilization Stoppers are very low moisture adsortion stoppers
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Straight Plug Rubber Stoppers, Wheaton
Wheaton straight plug stoppers provide maximum sealing for vials with a straight-wall glass finish
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Pluro Stopper, Neoprene, Ace Glass Incorporated
Neoprene stopper for use with filter flasks to support funnels securely.
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Sleeve-Style Rubber Stoppers, Wheaton
Plug stoppers with fold-over skirts are for use on serum vials and other crimp-finish containers that do not require an aluminum seal or overcap
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Straight Sided Stoppers, DWK Life Sciences
These high quality gray chlorobutyl stoppers are used for research and pharmaceutical packaging applications.
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Pluro Stoppers, Kimble Chase
This autoclavable neoprene rubber adapter set consists of seven cones designed to fit buchner and fritted glass funnels
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Septa, Sleeve Type, Rubber, Ace Glass Incorporated
This sleeve-type septa has a hollow plug
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SureSTART™ Stoppers, 20 mm, Level 2 High-throughput Applications, 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).
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Precision Seal™ Septa, Rubber, Ace Glass Incorporated
Seals are engineered for a precision fit (80% glass to rubber contact) in standard taper glassware joints and tubes
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Stoppers for Headspace Vials, Agilent Technologies
Stopper, Grey butyl headspace, 20 mm, -40/120C