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®, Rubber Stopper Assortment, Black
Supplier: VWR Collection
This two-pound assortment of black rubber stoppers is ideal for any small laboratory or school with limited need for any one size or style stopper.
Expand 1 Items
VWR®, Stoppers, PE
Supplier: VWR Collection
Stopper for test tubes Ø 12 to 16 mm, polyethylene, with tongues.
Expand 17 Items
VWR®, Stoppers, Neoprene, Green, without Holes
Supplier: VWR Collection
These stoppers contain no free sulphur. It exhibits good resilency and chemical resistance.
Expand 4 Items
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.
Expand 1 Items
VWR®, Stoppers for Chlorobutyl Serum and Lyophilisation
Supplier: VWR Collection
These stoppers have a fluorocarbon film on the top and bottom. In addition, the enhanced lyophilisation stoppers are coated with a cross-linkable polydimethylsiloxane on the underside of the flange.
Expand 5 Items
VWR®, Drain Stoppers for VWB2 Water Baths
Supplier: VWR Collection
Drain stoppers, VWR®
Expand 1 Items
VWR®, Rubber Stoppers
Supplier: VWR Collection
These stoppers allow insertion of a syringe needle and exhibit excellent resealing properties for air sensitive chemistry.
Expand 4 Items
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.
Expand 45 Items
VWR®, Glass Stoppers for Standard Ground Joints
Supplier: VWR Collection
Borosilicate 3.3 glass.
Expand 8 Items
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.
Expand 20 Items
VWR®, Stoppers for Standard Ground Joints
Supplier: VWR Collection
Greaseless closure, which prevents ground joints from seizing. With inclined, circumferential sealing lips for better sealing and reduced risk of breakage. Easily detachable. With ergonomically shaped grip.
Expand 6 Items
VWR® Plugs for Drosophila Vials and Bottles
Supplier: VWR Collection
These plugs are made of bonded dense weave cellulose acetate which provides an excellent barrier to mite infestation. They are precision manufactured for consistent fit and minimal waste.
Expand 3 Items
Rankem®, Stoppers, Penny Heads for Volumetric Flasks, Borosilicate Glass
Supplier: Transene
Borosilicate stoppers for volumetric flasks.
Expand 2 Items
Rankem®, Stoppers, Penny Heads for Volumetric Flasks
Supplier: Transene
Polypropylene stoppers for Volumetric flasks.
Expand 3 Items
: VWR Collection
: VWR Collection