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.
Cork Discs , Electron Microscopy Sciences
Supplier: Electron Microscopy Sciences
These discs are 20 mm diameter and are 3 mm thick. Perfect to be used with a cryostat.
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SILCOSEN® Silicone Stoppers, Hirschmann
Supplier: Hirschmann
SILICOSEN® stoppers are manufactured in a special process which have regular pores, thus making them ideal for the preparation and sterilization of culture media
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Silicone Stoppers, United Scientific Supplies
Supplier: United Scientific Supplies
Chemical resistant solid silicone stoppers.
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Hollow Pennyhead [ST] Stoppers, Chemglass
Supplier: Chemglass
Hollow glass stoppers with closed bottom.
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Synthware Pennyhead, Flask Length [ST] Stopper, Glass, Kemtech America
Supplier: Kemtech America
Heavy wall design.
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Solid Pennyhead Stoppers, Chemglass
Supplier: Chemglass
Solid stoppers have closed bottom.
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Stoppers for Wheaton® CompletePAK® Sterile Vials, DWK Life Sciences
Supplier: DWK Life Sciences (KIMBLE)
CompletePAK®
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WHEATON® Rubber Stoppers, DWK Life Sciences
Supplier: DWK Life Sciences (KIMBLE)
Clean and precise pharmaceutical grade rubber stoppers for research/parenteral drug applications.
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Assorted Rubber Stoppers
Supplier: Plasticoid
Solid, 1-hole and 2-hole stoppers in assorted sizes.
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Student Cork Assortment
Supplier: Manton Industrial
A convenient assortment for student use.
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PTFE Key-Head [ST] Stoppers, Flask Length Joint, Kimble Chase
Supplier: DWK Life Sciences (KIMBLE)
Stoppers are for use with flasks, mixing cylinders, separatory funnels, and more
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PYREX® Hollow [ST] Flask Stoppers, Corning
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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Synthware PTFE Stoppers
Supplier: Kemtech America
Stoppers feature PTFE handles for easy gripping.
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Solid Rubber Stoppers, United Scientific Supplies
Supplier: United Scientific Supplies
Solid, black stoppers contain a high percentage of pure rubber and weigh less than neoprene.
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Stopper, PTFE, Chemglass
Supplier: Chemglass
Flask length PTFE stopper with color coded handle.
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Neoprene Stoppers, United Scientific Supplies
Supplier: United Scientific Supplies
Synthetic, neoprene stoppers contain no free sulfur and exhibit good resiliency and shelf-life.



