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.

  • Rubber Stoppers

    United Scientific Supplies

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

  • 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…

  • 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…

  • 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.

  • 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…

  • 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…

  • 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.

  • 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

  • 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…

  • XX1004708

    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

  • 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)…

  • 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…

  • No 8 Stopper, Silicone

    DWK Life Sciences (Wheaton)

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

  • 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…

  • 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…

  • XX2004718

    MilliporeSigma

    Designed for use with Millipore stainless steel vacuum filter holders Stopper Size: No. 8 Hole I.D.: 9.5mm (3/8 in.) Silicone rubber construction

  • 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…

  • 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

  • NMR Stoppers

    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…

  • PYREX® PTFE Standard Taper Keyhole Stoppers, Color-Coded

    Corning

    These chemically resistant PYREX® keyhole stoppers are made from polytetrafluoroethylene (PTFE) and conform to Standard Taper stopper dimensions. The color-coded keys make sorting and selecting the correct size much faster and easier. These stoppers may be used in place of conventional glass…

  • 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…

  • 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

  • Neoprene Stoppers

    Hach

    Recommended where natural rubber would deteriorate or be attacked.

  • PYREX® Solid Glass Pennyhead Standard Taper Stoppers

    Corning

    Pennyhead stoppers are generally used in flasks and separatory funnels.

  • Snap-On Stoppers

    DWK Life Sciences (Wheaton)

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

  • 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…

  • SYNTHWARE PTFE Stoppers

    Kemtech America

    PTFE Stopper, Standard Taper, Synthware, Various Joint Sizes Available, with handle for easy griping.

  • Glass Pennyhead Stopper, Standard Taper 24/40

    DWK Life Sciences (Kimble)

    Hollow plug type With sealed bottom and vertical penny head

  • 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…

  • SYNTHWARE Pluro-Stopper Set

    Kemtech America

    Set comes with 8 sizes. Stoppers are to be used with Buchner and Fritted glass funnels.

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