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® 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® 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® 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® 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® 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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Pluro Stoppers, Kimble Chase
Supplier: DWK Life Sciences (KIMBLE)
This autoclavable neoprene rubber adapter set consists of seven cones designed to fit buchner and fritted glass funnels