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Stoppers

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  • 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.

  • No 8 Stopper, Silicone

    Wheaton

    Silcone rubber stopper Makes the connection to a standard 1 liter Erlenmeyer-style filtration flask Size: No. 8 Case of 6

  • 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.

  • Rubber Stoppers

    United Scientific Supplies

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

  • Sleeve Stoppers & Plugs

    Plasticoid

    Hollow plug to fit inside bottles, flasks, vials, or tubing with a sleeve to pull over neck to create 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…

  • 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

  • Neoprene Rubber Stoppers

    Plasticoid

    Solid green Neoprene Withstands exposure 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…

  • Solid Silicone Stoppers

    Free from volatiles or extractable substances which may impair cell growth; for use at temperatures from -80 to 450°F 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…

  • 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…

  • Silicone Stoppers with Holes

    Kimble

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

  • Rubber Stoppers

    Plasticoid

    M35 Green Neoprene 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…

  • Multifit Reusable Glass Syringes, Luer-Lok™

    BD

    Interchangeable plungers Luer-Lok™ tip Without needle Multifit interchangeability eliminates matching components after sterilization. Fine inference line on plunger for precise volume adjustments. Capacity and graduation interval are shown in listings. Zone 2 coded.

  • Rubber Stoppers for Erlenmeyer Flasks

    Humboldt

    Rubber stopper with brass hose fitting for use with Erlenmeyer Flasks.

  • Mity Plugs

    Jaece

    Cellulose Acetate plugs for all size test tubes and laboratory flasks. MITY Plugs are non-shedding, dense weave cellulose acetate E plugs for drosophila vials and bottles. Dense weaving offers a superior barrier to mite infestation. Allows for reduced food evaporation to keep food fresh…

  • Plug-Type Rubber Sleeve Stoppers

    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…

  • 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)…

  • XX1004708

    EMD Millipore

    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

  • Serum & Pharmaceutical Stoppers

    Plasticoid

    Available with Straight Sided Plugs, 11mm, 13mm, and 20mm Available with Blow back finish, 20mm and 30mm Serum Stoppers in Red Natural Rubber, Gray Butyl, and Silicone Custom Compounds available upon request in EPDM, Nitrile, Neoprene, and Viton® Plugs are designed to fit Vials and Bottles…

  • #12 Silicone Rubber Stoppers

    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.

  • 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.

  • 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) …

  • PYREX® Solid Glass Pennyhead Standard Taper Stoppers

    Corning

    Pennyhead stoppers are generally used in flasks and separatory funnels.

  • Scienceware® Safe-Lab® Teflon® PTFE Stoppers for Tapered Joints

    Bel-Art Products

    Safe-Lab™ solid Teflon® PTFE plastic stopper with threaded polypropylene extracting nut is easily removed by turning the red extraction nut to apply a safe, gentle and even force against the mouth of the vessel.  For use with separatory funnels and volumetric flasks Helps…

  • HDPE Stopper No 13

    Corning

    These blue and white No. 13 PYREX® stoppers are made from linear high-density polyethylene and have closed bottoms to conform to Standard Taper stopper dimensions. The three rings on the plug provide an efficient seal. This improved design fully protects the neck in the event of accidental…

  • 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

  • Stopper Top Pk144

    Kimble

    Top Stoppers for Incubation Flasks. Rubber stoppers for flask top and sidearm provide a secure double seal Top stopper has off-center hole for insertion of center well Fits both 10 and 25 mL flasks

  • Rubber Stoppers for 800mL Kjeldahl Flasks

    Plasticoid

    Choice of styles: solid or with one hole of proper size for 800mL Pyrex™ Kjeldahl flasks One-hole style can be enlarge or the solid stopper bored to take larger sizes Top diameter: 39mm; bottom diameter: 28mm; height: 35mm; one-hole bore diameter: 8mm

  • Rubber Stoppers

    United Scientific Supplies

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

  • Glass Pennyhead Stopper, Standard Taper 24/40

    Kimble

    Hollow plug type With sealed bottom and vertical penny head

  • Snap-On Stoppers

    Wheaton

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

  • 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…

  • PYREX® Gas Washing Stopper with Extra Coarse Fritted Disc

    Corning

    These PYREX® gas washing Standard Taper stoppers are replacements for the 500mL gas washing bottles (No. 31760-500EC). Sidearm tubulations are 8mm O.D. A 40/50 Standard Taper stopper is used to seal the top to the base. This Standard Taper stopper incorporates a tube with a 20mm diameter extra…

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