Stoppers

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Stoppers
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  • 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 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.

  • 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.

  • 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

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

  • Polyethylene Stoppers

    Chemglass

    Inexpensive, tapered stopper provides for a tight, leak-proof fit while the top ring permits the stopper to be easily removed. Stoppers are made of yellow Polyethylene

  • Snap-On Stoppers

    DWK Life Sciences (Wheaton)

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

  • Neoprene Stoppers

    Hach

    Recommended where natural rubber would deteriorate or be attacked.

  • 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®

  • 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

  • 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…

  • Rubber Stoppers

    United Scientific Supplies

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

  • 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.

  • 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)…

  • 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…

  • SUPELCO Stoppers

    MilliporeSigma

    gray butyl rubber, diam. 20 mm, pkg of 100 ea Synonym(s): PK100 20MM BUTYL SEPTA Amino Acid Sequence: Empirical Formula: Formula Weight: Linear Formula: Purity: Boiling Point: Melting Point: Density: Refractive Index: Storage: Beilstein…

  • Ceaprene Stoppers

    Greiner Bio-One

    ?Gas-permeable Made of water-repellent material

  • Grip Stoppers

    Greiner Bio-One

  • 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…

  • Scienceware® Cup Type Stoppers

    Bel-Art - SP Scienceware

    …also be inverted for use as loose or tight-fitting caps. Smooth inside walls and flat bottoms permit use as containers. Length of all sizes: 25 mm. Stopper sizes, corresponding generally to standard numbering of laboratory rubber stoppers and top x bottom o.d. in millimeters are shown in listings.

  • 20mm Snap On Stoppers

    J.G. Finneran

  • 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

  • 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…

  • 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…

  • Borosil® Plastic Polypropylene Stoppers

    Borosil

    Borosil® Plastic Polypropylene Flat Head Stoppers are with Interchangeable Joint and can be used with Volumetric Flask of 5645, 5647 families or for other suitable joints. Polypropylene available in sizes of 7/16 to 34/35. In collaboration with Borosil Glass Works, Foxx Life Sciences…

  • KIMAX Brand Joint Stoppers

    DWK Life Sciences (Kimble)

    Borosilicate, with penny head Conforms to ASTM Standard E 675 Size Standard Taper 13 has solid plug; size Standard Taper 38 has recessed bottom Standard Taper designation indicates the approximate diameter of the ground zone at its widest (gauging) point.

  • Push On Stoppers

    Dynalon

    Product Dimensions (l x w x h) : 0x0.619x0.343in Sample Cup Stopper, l ow-density polyethylene . 13mm for use in autoanalyzers.

  • Scienceware® Cup Type Stoppers

    Bel-Art - SP Scienceware

    …caps. Smooth inside walls and flat bottoms permit use as containers. Length of all sizes: 25 mm. Stopper sizes, corresponding generally to standard numbering of laboratory rubber stoppers and top x bottom o.d. in millimeters are shown in listings. * Sale price valid only on current…

  • Glass Pennyhead Stoppers

    DWK Life Sciences (Kimble)

    Solid pennyhead stopper for volumetric flasks, centrifuge tubes, etc. Meets ASTM Standard E 694.

  • PennyHead Glass Hollow Stoppers

    Across International

    Ai 24/40 pennyhead glass hollow stopper. Glass material: high borosilicate glass 3.3.

  • #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.

  • PYREX® Brand Stoppers

    Corning

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

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