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VWR International

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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.


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Description:   Low in free sulfur. Size 0 with 3mm diameter hole. Diameter of top: 17mm. Diameter of bottom: 13mm. Length: 25mm.
Catalog Number: 59581-141
Supplier: VWR International


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Description:   High resiliency, pure gum. Less free sulfur (1/4%) and lower density than standard black rubber stoppers. Added hole facilitates laboratory usage. Size: 10. Diameter of top: 50mm. Bottom: 42mm. Hole diameter: 5mm.
Catalog Number: 59584-310
Supplier: VWR International


Small Business Enterprise

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Description:   XXXX Grade. Tapered, 28mm length. Top diameter: 24mm. Bottom diameter: 18mm. Pack of 100.
Catalog Number: 23420-242
Supplier: VWR International


Low Manufacturing Impact

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Description:   Low in free sulfur. Size 13 with 5mm diameter hole. Diameter of top: 68mm. Diameter of bottom: 58mm. Length: 25mm.
Catalog Number: 59581-549
Supplier: VWR International


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Description:   XXXX Grade. Tapered, 31mm length. Top diameter: 30mm. Bottom diameter: 25mm. Pack of 100.
Catalog Number: 23420-322
Supplier: VWR International


Low Manufacturing Impact

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Description:   Pure gum. Contain less free sulfur (1/4%) and are less dense than standard black rubber stoppers. Withstand repeated autoclaving. Size: 8. Diameter of top: 41mm. Bottom: 33mm. Length: 25mm.
Catalog Number: 59583-329
Supplier: VWR International


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Description:   XXXX Grade. Tapered, 22mm length. Top diameter: 17mm. Bottom diameter: 13mm. Pack of 500.
Catalog Number: 23420-173
Supplier: VWR International


Low Manufacturing Impact

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Description:   Contain no free sulfur and exhibit good resiliency. Withstand petroleum products and oils as well as most inorganic acids and bases. Size: 11. Diameter of top: 56mm. Bottom: 48mm. Length 25mm.
Catalog Number: 59589-336
Supplier: VWR International



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Description:   Contain no free sulfur and exhibit good resiliency. Withstand petroleum products and oils as well as most inorganic acids and bases. Size: 13. Diameter of top: 68mm. Bottom: 58mm. Length 25mm.
Catalog Number: 59589-370
Supplier: VWR International


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Catalog Number: 59580-322
Supplier: VWR International



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Description:   (TW-ASSORT) Twistit*. Twist-off seals permit easy conversion from a solid to a one, two or three-hole stopper. Soft, resilient, white rubber withstands autoclaving. Assortment contains nine size 3 stoppers, eight 4's, six 5's, four 6's, two 7's, two 8's, one 9, and one 10.
Catalog Number: 59586-167
Supplier: VWR International


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Description:   Pure gum. Contain less free sulfur (1/4%) and are less dense than standard black rubber stoppers. Withstand repeated autoclaving. Size: 7. Diameter of top: 37mm. Bottom: 30mm. Length: 25mm.
Catalog Number: 59583-307
Supplier: VWR International


Small Business Enterprise

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Description:   High percentage of pure rubber; weigh less than neoprene; low in free sulfur (1/2%). Size: 6. Diameter of top: 32mm. Diameter of bottom: 26mm. Length: 25mm.
Catalog Number: 59580-229
Supplier: VWR International



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Description:   XXXX Grade. Tapered, 38mm length. Top diameter: 36mm. Bottom diameter: 29mm. Pack of 100.
Catalog Number: 23420-413
Supplier: VWR International


Low Manufacturing Impact

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Description:   Twistit*. Three twist-off seals permit easy conversion from a solid to a one, two or three-hole stopper. Soft, resilient, natural, white rubber withstands repeated autoclaving. Size: 10.
Catalog Number: 59586-164
Supplier: VWR International



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Description:   Low in free sulfur. Size 14 with 5mm diameter hole. Diameter of top: 90mm. Diameter of bottom: 75mm. Length: 39mm.
Catalog Number: 59581-582
Supplier: VWR International



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