Stoppers

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Stoppers
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  • No. 8 Perforated Stopper

    MilliporeSigma

    Designed for use with 1L and 4L vacuum filtering flasks and 47mm vacuum filter holder assemblies 100% Silicone Material Perforated, 1-hole accepts filter holder assemblies and tubing Pack of 5

  • Solid Rubber Stoppers

    Plasticoid

    Standard Grade Size No. 000 is 18 mm long; sizes No. 00 to No. 13 are 25 mm long. Sizes No. 13 1/2, 14 and 15 are 35 mm, 36 mm and 39 mm respectively.

  • #12 Silicone Rubber Stoppers

    DWK Life Sciences (Kimble)

    This rubber stopper is an accessory for Kimble 4L flasks 27060-4000, 27065-4000, and 27070-4000, as well as 90mm funnnel 953805-0090.

  • Stoppers

    Dynalon

    Stoppers - Test Tubes 11-12 MM (1211Z88) Product Dimensions (l x w x h) : 0x0.463x0.622in Natural Test Tube Stoppers. Low-Density Polyethylene, 11mm-12mm tubes. Single- position tight fitting stopper to fit disposable test tubes.  Stoppers - Test Tubes 16 MM (1211Z93) …

  • Solid Silicone Stoppers

    … Can be steam sterilized at 15 lbs. pressure, making them suitable for culture tubes containing pathogenic materials Length: 25 mm Not recommended for use with concentrated acids, bromine, carbon tetrachloride, butanol, iso-propanol or toluene. Packaged in a bag of 12 stoppers.

  • Plug-Type Rubber Sleeve Stoppers

    DWK Life Sciences (Kimble)

    Uses include outgassing NMR tubes, pressure venting or adding reactants via syringe. Hollow, plug-type stopper fits into the neck of the glassware apparatus Sleeve extension fits over the neck for a secure seal Diaphragm can be punctured with a syringe needle Series 774261 may be…

  • 20mm Snap On Stoppers

    J.G. Finneran

  • Sleeve Stoppers & Plugs

    Plasticoid

    …a double seal .Septa area allows insertion of needle, with excellent re-sealing properties for air sensitive chemistry Standard Compounds include Red and White Natural Rubber, Gray Butyl on select sizes Custom Sleeve Stopper Compounds available: EPDM, Nitrile, Neoprene, Silicone and Viton®

  • Ceaprene Stoppers

    Greiner Bio-One

    ?Gas-permeable Made of water-repellent material

  • Rubber Stoppers

    United Scientific Supplies

    Convenient assortments of various sizes of rubber stoppers in 1lb bags.

  • One-Hole Rubber Stoppers

    Plasticoid

    Size No. 000, 00 and 0 have hole 3 mm diameter; sizes No. 1 and 2 have hole 4 mm in diameter; all other sizes have hole 5 mm in diameter.

  • Silicone Stoppers with Holes

    DWK Life Sciences (Kimble)

    General purpose single-hole silicone rubber stoppers. Steam autoclavable Opaque yellowish-white color Stoppers are manufactured from pure silicone rubber

  • Stopper Assortment

    Plasticoid

    Made of soft, pliable, black-compounded stock Length: 25 mm Includes stoppers of solid, one-hole and two-hole styles in sizes 00, 0, 1, 2, 3, 4, 5, 6, 6 1/2, 7 and 8; total of 66 stoppers

  • Rubber Stoppers

    Plasticoid

    …for added chemical resistance Listed mainly by trade-size, available in solid, one-hole, and two hole rubber stoppers. Uses vary widely, some are outlined below: Carboy Stoppers Crucible Holders Laboratory & Test Tube Stoppers Masking Applications Micro Stoppers Pipe Plugs Tube Stoppers

  • NMR Stoppers

    Plasticoid

    …a double seal .Septa area allows insertion of needle, with excellent re-sealing properties for air sensitive chemistry Standard Compounds include Red and White Natural Rubber, Gray Butyl on select sizes Custom Sleeve Stopper Compounds available: EPDM, Nitrile, Neoprene, Silicone and Viton®

  • PYREX® Brand Stoppers

    Corning

    Full length stoppers, closed at bottom, with penny head Conform to ASTM Standard E 675

  • Rubber Stoppers

    United Scientific Supplies

    Rubber Stoppers packaged in convenient 1lb bags. Available in solid, 1 hole, and 2 hole versions.

  • Sani-Tech® Silicone Stoppers

    Saint Gobain

    Sani-Tech® ultra-pure platinum-cured silicone stoppers outperform standard neoprene and rubber stoppers in critical laboratory and process applications. These long-life silicone stoppers are fully autoclavable and sterilizable and will not crack, spallate or invoke particle migrations that can…

  • Twistit Convertible Stoppers

    Plasticoid

    Unique seal system allows use as solid or one-, two- or three-hold closures Simplifies stock room inventory Molded of soft, resilient, white natural rubber Seals vacuum-tested to 760 mm Hg Autoclavable, with good shelf life. Sizes #3 & #4 have two holes; #5 - #10 have the (3)…

  • Neoprene Stoppers

    United Scientific Supplies

    Neoprene stoppers can be used in areas where rubber would be attacked by reagents or solvents. Synthetic neoprene stoppers have good resiliency and shelf-life. They withstand petroleum products and oils as well as most inorganic acids and bases. Stopper are green for easy identification. Sold by the…

  • Lypholization-Slotted Rubber Stopper

    DWK Life Sciences (Wheaton)

    Plug diameter 7 mm i.d., 13 mm o.d. Of gray butyl rubber, slotted with flanged top; partial insertion leaves bottle contents vented for freeze drying; insertion to flange seals bottle Readily punctured with syringe needle For use with Thomas series 8269A Aluminum Seals.

  • Stopper

    DWK Life Sciences (Kimble)

    These stoppers are used as an accessory for microscale threaded Standard Taper 14/10 kits. Pennyhead stopper sizes 10/18 through 19/22 are solid borosilicate glass Sizes 24/25 and larger are hollow borosilicate glass Manufactured from 33 expansion, low extractable borosilicate glass…

  • Cork Stoppers

    GSC International, Inc.

    Quality, laboratory grade Cork Stoppers. Available in the following sizes: Size 000 Size 00 Size 0 Size 1 Size 2 Size 3 Size 4 Size 5 Size 6 Size 7 Size 8 Size 9 Size 10 Size 11 Size 12 Size 14 Size 16 Size 20 Size…

  • Snap-On Stoppers

    DWK Life Sciences (Wheaton)

    Natural red rubber or gray chlorobutyl/45 material 7 x 13 or 13 x 20 mm sizes

  • Glass Pennyhead Stopper, Standard Taper 24/40

    DWK Life Sciences (Kimble)

    Hollow plug type With sealed bottom and vertical penny head

  • Neoprene Rubber Stoppers

    Plasticoid

    …to temperatures up to  120°C Usable with petroleum products, vegetable and mineral oils and fats which deteriorate natural rubber Standard length: 26 mm Increased functionality over rubber stoppers at elevated temperatures. Not recommended for use with very light oils, such as kerosene.

  • Serum Bottle Stoppers

    DWK Life Sciences (Wheaton)

    …volatile extractables from the rubber component. Butyl stoppers have very low extractable formulations for use with liquid, lyophilized or dry powder products needing protection from oxygen or moisture vapor penetration. Teflon-coated stoppers provide an inert barrier to minimize interaction between…

  • Flange Style Rubber Stopper

    DWK Life Sciences (Wheaton)

    Cleanest, most precise pharmaceutical grade rubber stoppers for research and parenteral drug applications Readily punctured with syringe needle 1229H84-K77, 1223Z64-65, 1780K28-31: straight plug style 1229K78, 1780K33-35: 2 leg lypohilization style 1780J10-J14: sleeve style

  • Weighing Bottles, Low Form With Glass Stopper

    DWK Life Sciences (Kimble)

    Low Form, KIMAX® Brand (Kimble 15165) Of borosilicate glass, with Standard Taper glass stopper. Bottom part of stopper is sealed. Designed from Federal Specification NNN-B-1493. Dimensions indicated in table are i.d. x height without cap.

  • Bottle Solution w / PTFE Stopper 2000ml Cs4

    DWK Life Sciences (Kimble)

    KIMAX bottles conform to ASTM E438, Type I, Class A glass. Bottle necks are ground to accept flathead color-coded PTFE stoppers. Replacement stoppers are 41941.

  • Black Rubber Stoppers

    GSC International, Inc.

    A black rubber stopper that is useful in a number of applications. Available in a variety of sizes. Each pack is one pound. Choose from solid, 1 hole, and 2 hole stoppers.

  • Two Hole Rubber Stoppers

    Plasticoid

    Standard Grade Sizes No. 00, 0 and 1 have holes 2, 3 and 4 mm diameter, respectively; all other sizes have holes 5 mm diameter

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