Stoppers
Leak-proof, solid stoppers seal bottles, flasks, vials, and even tubing to prevent liquids and gases escaping. Multi-hole styles provide the limited flow stability conditions desired in order to prevent air bubble build up. With a slightly tapered design, different diameter sized stoppers are inserted in labware for a snug fit that still allows easy removal. The closures are manufactured in different materials for accurate resistance to harsh contents and can maintain vacuum atmosphere.
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® 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® 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® 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® Rubber Stoppers
Supplier: VWR International
Versatile rubber stoppers are four stoppers in one.
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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® Corks
Supplier: VWR International
XXXX Corks function as a closure for bottles, vials, laboratory and other openings.
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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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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® 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® Pure Gum Rubber Stoppers, Solid
Supplier: VWR International
These solid, pure gum, amber rubber stoppers contain less free sulfur (max
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Pennyhead Stopper, Solid Glass, Glassco
Supplier: GLASSCO LABORATORY EQUIPMENT
Stoppers are made from Borosilicate 3.3 glass.
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Pluro Stopper, Neoprene, Ace Glass Incorporated
Supplier: ACE GLASS, INC.
Neoprene stopper for use with filter flasks to support funnels securely.
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Septa, Sleeve Type, Rubber, Ace Glass Incorporated
Supplier: ACE GLASS, INC.
This sleeve-type septa has a hollow plug
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SP Bel-Art Safe-Lab™ Thermometer Joint Adapters for Tapered Joints, Bel-Art Products, a part of SP
Supplier: Bel-Art Products, a Part of SP
Teflon® PTFE body with Viton® O-Ring for airtight vacuum work.
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PYREX® Hollow [ST] Flask Stoppers, Corning
Supplier: CORNING CA
These PYREX® hollow borosilicate glass stoppers are light weight, strong to reduce chipping and breakage. Barrel shaped head makes it easy to clean and rotate in or out. Grooves in the sides help prevent slippage.