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

    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…

  • Rubber Stoppers

    United Scientific Supplies

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

  • 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.

  • 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…

  • 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.

  • Stoppers, PTFE, Full Length

    Ace Glass

    PTFE full length stoppers, 24/40 size is solid; 45/50 is hollowed from top, bottom closed.

  • Ultra Pure Stoppers

    DWK Life Sciences (Wheaton)

    Bromobutyl rubber compound with a high level of chemical purity Straight Plugs and Lyophilization Stoppers (2-leg, 3-Leg and Igloo) are available All Ultra Pure Stoppers are autoclavable Ultra Pure Straight Plug Stoppers are made from a bromobutyl rubber compound containing the…

  • 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…

  • 20 MM STPR,SNAP-ON(13X20)GRY BUTYL,SILZD

    DWK Life Sciences (Wheaton)

  • Expansion Plugs, Black Rubber

    Plasticoid

    Tapered rubber stoppers assembled with stainless steel hardware and a wing nut, provide a mechanism to make an expandable rubber plug. This ensures seals and keeps plugs from working their way out, as well as allowing the plugs to resist added pressure. They are fully customizable from hardware…

  • 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…

  • PYREX® Gas Washing Stopper with Coarse Fritted Disc: replacements for the 500mL…

    Corning

    These PYREX® gas washing Standard Taper stoppers are replacements for the 500mL gas washing bottles (No. 31760-500C). 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 coarse…

  • Solid Rubber Stoppers

    Chemglass

    These stoppers are suitable for practically all general laboratory uses. Composition ensures resiliency and pliability over a long period and withstands laboratory conditions without hardening. The dimensions are in accordance with specifications established by the N.B.S. and are low in free sulfur…

  • Stopper, Glass

    Ace Glass

    Ground glass stopper for 7/10 or 14/20 joint, for use with microscale equipment.

  • Stopper, Flask Length, Pennyhead

    Chemglass

    All sizes are solid with the exception of the #38 (CG-3018-08) which is hollow.

  • Ultra Pure Stoppers, 20 mm

    DWK Life Sciences (Wheaton)

    Bromobutyl rubber compound with a high level of chemical purity Straight Plugs and Lyophilization Stoppers (2-leg, 3-Leg and Igloo) are available All Ultra Pure Stoppers are autoclavable

  • 20MM SEPTA, RED SILICONE

    DWK Life Sciences (Wheaton)

  • PYREX® Solid Glass Pennyhead Standard Taper Stoppers

    Corning

    Pennyhead stoppers are generally used in flasks and separatory funnels.

  • 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.

  • PYREX® Standard Taper Hollow Glass Stoppers

    Corning

    The hollow stopper is light in weight, yet very strong to reduce chipping and breakage, thus minimizing replacement costs. A barrel-shaped head means it is easy to clean and even easier to rotate in or out. Grooves in the sides help prevent slippage. The flat top allows the stopper to stand on its…

  • Glass Pennyhead Stopper, Standard Taper 24/40

    DWK Life Sciences (Kimble)

    Hollow plug type With sealed bottom and vertical penny head

  • Stopper, Butyl, Gray, 20mm

    West Pharmaceutical Services

  • 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…

  • Stopper, Safe-Lab®, Flask Length, PTFE

    Chemglass

    Flask length PTFE stopper has a Polypropylene extraction nut permitting easy removal of the stopper from the flask. All sizes are solid.

  • Assorted Rubber Stoppers (2 Pound)

    GSC International, Inc.

  • Key-Head Color-Coded Medium Length PTFE Stoppers

    DWK Life Sciences (Kimble)

    Stoppers are used with laboratory glassware such as flasks and separatory funnels. PTFE has excellent chemical resistance and resists freezing in ground glass joints Remove the colored polyethylene handle from the PTFE stopper before cleaning or exposing to temperatures above 80 °C …

  • Tube, Aviation Freeze Point

    Ace Glass

    Thomas No. 1166P43 #3 rubber stopper w/holes Thomas No. 1166P44 Aviation frz/pt tube

  • Hollow with closed bottom Pennyhead Stoppers

    Chemglass

    Hollow stopper with closed bottom

  • Assorted Solid Rubber Stoppers

    GSC International, Inc.

    1 pound pack of assorted solid rubber stoppers. Sizes and quantities are as follows: Size 00: 4 each Size 0: 4 each Size 1: 4 each Size 2: 3 each Size 3: 3 each Size 4: 3 each Size 5: 3 each Size 6: 3 each Size 7: 3 each

  • SYNTHWARE Flask-Length Glass Penny-Head Stoppers

    Kemtech America

    Penny-Head Stopper, Flask Length, Synthware, Various Joint Sizes Available.

  • Neoprene Stoppers

    Hach

    Recommended where natural rubber would deteriorate or be attacked.

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