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®, Stoppers, Gum Rubber, with 1 Hole
Supplier: VWR Collection
These stoppers contain less free sulphur and have a lower density than black rubber stoppers. Its composition ensures high resilency and holes facilitates the laboratory usage. Ideal for food grade applications such as beer and wine making used with carboys.
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Stopper, rubber, plug-type, KIMBLE®
Supplier: KIMBLEKONTES
These stopper fits into the neck of the apparatus. Ideal for outgassing NMR tubes, pressure venting and addition of reactants via syringes.
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Stoppers for reagent bottle and ground joints, PYREX®
Supplier: Corning
Combination glass stoppers from PYREX®, borsilicate glass with closed bottoms may be used as [ST] joint stoppers and as reagent bottle stoppers. Barrel-shaped head is easy to clean and rotate, side grooves prevent slippage, and flat top allows stopper to stand on head.
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Stoppers, flat, diamond-ground, DURAN®
Supplier: DWK Life Sciences
DURAN®, borosilicate glass 3.3, clear.
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VWR®, Stoppers, Neoprene, Green, without Holes
Supplier: VWR Collection
These stoppers contain no free sulphur. It exhibits good resilency and chemical resistance.
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Stoppers, rubber, with reversible edge
Supplier: Saint Gobain Life Sciences
The white stoppers made of natural rubber guarantee absolute impermeability, even when the edges of the tubes or glass, metal or plastic containers to be sealed are imperfect. They can be punctured and resealed after sampling, even after several uses.
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Stopper, HDPE, KIMBLE®
Supplier: KIMBLEKONTES
HDPE, linear, ideal for flasks that are grounded to [ST] stopper dimensions.
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Stoppers for [ST] Flask PYREX®
Supplier: Corning
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.
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Rubber stopper, DURAN®
Supplier: DWK Life Sciences
This bromobutyl rubber closure provides a gas-tight seal for all GL 25 and GL 45 laboratory bottles with sizes from 10 to 20000 ml.
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Silicone stoppers with folding skirt, Versilic®
Supplier: Saint Gobain Life Sciences
These stoppers are made of translucent silicone. The stoppers guarantee absolute impermeability, even when the edges of the tubes or glass, metal or plastic containers are imperfect.
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Silicone stoppers
Supplier: HIRSCHMANN
SILICOSEN® and BIO-SILICO® sterile stoppers are manufactured in a special process and have regular pores, thus making them ideal for the preparation and sterilisation of culture media. The uniform pores and good permeability to air make the stoppers ideally suitable for cultivation of aerobic microorganisms.
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Stoppers for conical ground joints
Supplier: Lenz Laborglas GmbH & CO.KG
DURAN®, borosilicate glass stopper, clear, solid or semi hollow.
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VWR®, Rubber Stoppers, Black
Supplier: VWR Collection
These stoppers contain high percentage of rubber, less neoprene and free sulphur. Its composition ensures resiliency and pliability over a long period of time.
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VWR®, Rubber Stoppers
Supplier: VWR Collection
These stoppers allow insertion of a syringe needle and exhibit excellent resealing properties for air sensitive chemistry.
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Versilic™ Stoppers
Supplier: Saint Gobain Life Sciences
Use these stoppers for biology, microbiology and hematology, as well as food science, technical, medical and hospital apparatus. Saint Gobain Life Sciences Versilic™ Silicone Stoppers are particularly suited for all types of tissue culture work.
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VWR®, Stoppers, PE
Supplier: VWR Collection
Stopper for test tubes Ø 12 to 16 mm, polyethylene, with tongues.
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Silicone rubber stoppers, KIMBLE®
Supplier: KIMBLEKONTES
These silicone rubber general purpose stoppers have one hole and an opaque yellowish-white colour.
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Stoppers for conical ground joints, PYREX®
Supplier: Corning
Hollow, full length stopper closed at the bottom from PYREX®, borosilicate glass.
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Stoppers, butyl rubber, gray, KIMBLE®
Supplier: KIMBLEKONTES
These stoppers designed for aluminum seal finish vials.
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Stoppers, pointed, diamond-ground, DURAN®
Supplier: DWK Life Sciences
DURAN®, borosilicate glass 3.3, clear.
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Drain stoppers for SAP and JBN baths
Supplier: GRANT INSTRUMENTS
Drain stoppers, recommended when using heat transfer beads, to prevent beads entering the drain hole.
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Stoppers, Pierce-It™
Supplier: Simport Scientific
Made of thermoplastic elastomer these disposable closures produce a firm, leak-resistant seal for glass and plastic tubes. They will protect samples from evaporation and contamination. They can be easily applied and removed with one hand. They can be punctured to allow through-cap sampling via closed-tube instrumentation systems. Two sizes, 13 and 16 mm fit a variety of tubes including glass evacuated blood drawing tubes. Will also fit 12 mm I.D. cuture tubes.
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VWR®, Drain Stoppers for VWB2 Water Baths
Supplier: VWR Collection
Drain stoppers, VWR®
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VWR® Cellulose Stoppers
Supplier: VWR Collection
These stoppers are made of cellulose and are used for microbiological samples and tissue cultures in test tubes or Erlenmeyer flasks.
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Glass stoppers, standard taper, hexagonal, hollow
Supplier: Lenz Laborglas GmbH & CO.KG
These standard taper hollow stoppers are made from borosilicate glass 3.3 and have a hexagonal head.
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VWR®, Glass Stoppers for Standard Ground Joints
Supplier: VWR Collection
Borosilicate 3.3 glass.
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Silicone stoppers, Versilic®
Supplier: Saint Gobain Life Sciences
These slightly conical translucent stoppers are made from silicone.
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VWR®, Cork Stoppers
Supplier: VWR Collection
XXXX grade cork.