Stoppers, Bottles
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Precision Seal® rubber septa white
MilliporeSigmaThe recommended choice for use with organic chemicals and solvents, pressure applications, and cannulation techniques:Precision Seal septa are designed specifically for the rigorous requirements of chemical applications. •Precision fit: Precision Seal septa have a longer, tapered plug that seats…
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Solid Rubber Stoppers
ChemglassThese 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…
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Stoppers, PTFE, Full Length
Ace GlassPTFE full length stoppers, 24/40 size is solid; 45/50 is hollowed from top, bottom closed.
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Two Hole Rubber Stoppers
PlasticoidStandard 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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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…
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Low Actinic Red Stained Glass Stoppers
ChemglassFlask length solid penny head stopper with low actinic red stain.
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Glindemann PTFE sealing rings
MilliporeSigma•This narrow ring seal is an alternative to a PTFE joint sleeve •Greaseless protection for air- and moisture- sensitive compounds •Can be used for prolonged storage under vacuum •Slide easily onto medium and full length taper joints •Can be used with Keck® clip and similar metal joint clips …
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Neoprene Stoppers
United Scientific SuppliesNeoprene 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…
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3-Leg Lyophilization Stoppers
DWK Life Sciences (Wheaton)1233Z70: 3-leg design provides stability during lyophilization and resists cocking. Constructed of Gray Chlorobutyl/50 material and fit bottles with mouth 13 mm ID x 20 mm OD. 1224A82: 3-leg lyophilization stopper is made from gray chlorobutyl/55 and is used with Wheaton screw neck diagnostic…
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Serrated natural rubber septa red rubber
MilliporeSigmaClosure has a turnover flange molded to grip outside of container neck, promoting a double seal in conjunction with annular serrations on a hollow plug. Annular serrations depress themselves against the inside wall of the bottle neck, making each serration a suction sealing point.Note: For extra…
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CORK STOPPERS
United Scientific SuppliesThese grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs of 100.
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Stoppers, O-Rings, Airfree®, Schlenk
ChemglassFor use with the AF-0060 or AF-0061 manifolds or any Airfree® component with an o-ring as a closure. Supplied complete with one Viton O-Ring.
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Gray Butyl Rubber Lyophilization Style Stoppers
DWK Life Sciences (Kimble)Designed for aluminum seal finish vials Two-leg style reduces possibility of legs sticking together Gray high grade butyl rubber, lyophilization style
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Twistit Convertible Stoppers
PlasticoidUnique 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)…
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Serrated silicone rubber septa bottom
MilliporeSigmaTranslucent silicone rubber septa:. Contain no pigments, waxes, or molding agents. Good for high heat applications (200C continuous or 400C intermittent). Autoclavable for sterile applications. Excellent resistance to deterioration due to sunlight and ozone
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Suba-Seal® septa red rubber
MilliporeSigmaWell-known as the best quality rubber turn-over closure with serrated stopper, Suba-Seal brand is available exclusively from Sigma-Aldrich. Ideal for air and moisture-sensitive chemistry procedures. After piercing with non-coring needle, rubber closes puncture, providing air and moisture tight seal…
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WHEATON® COMPLETEPAK 13 mm Sterile OmniFlex 3G Igloo Lyo Stopper
DWK Life Sciences (Wheaton)Sterilized, off-the-shelf, ready-to-use (RtU) primary packaging component Focuses your effort on core competencies and reduces lead time Streamlines process and frees up valuable clean room space USP <788>/EP 2.9.19 Particulate Matter in Injections, USP <85>/EP 2.6.1, The…
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Stopper 19/22
CorningThese hollow PYREX® 19/22 Standard Taper joint and bottle stoppers are closed at the bottom. They are interchangeable with standard taper joints and bottle stoppers of the same size. These hollow stoppers are light in weight, yet very strong to reduce chipping and breakage, thus minimizing…
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Septum stopper, 20mm Blue Butyl Rubber
Bellco GlassManufactured from Blue Chlorobutyl. The septum stopper can withstand autoclaving 160 degree Celsius at normal autoclaving times 12-20 minutes. Specifications: Material: Blue Chlorbutyl Autoclaving: No Higher Than 160 Degree Celsius Size: 20mm Case Quantity: 100
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Scienceware® Safe-Lab® PTFE Stoppers
SP Bel-ArtSimilar to 8771R10 series, but in standard taper joint sizes Conforms to ASTM Standard E 675 Use with boiling and distilling flasks
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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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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…
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Sleeves, PTFE
ChemglassReusable .005in thick PTFE sleeve for standard taper joints provides a grease-free seal.
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No. 8 Perforated Stopper
MilliporeSigmaDesigned 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
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#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.
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Suba-Seal® silicone rubber septa
MilliporeSigma•Translucent silicone rubber septa •Contains no pigments, waxes, or molding agents •Good for high heat applications (200C continuous or 400C intermittent) •Autoclavable for sterile uses •Excellent resistance to deterioration due to sunlight and ozoneTurnover flange grips outside of container…
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Plug, Nylon, HDPE or PTFE, Back seal
Ace GlassA back-seal, solid plug for sealing coulmn ends. Supplied with one FETFE O-Ring.
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Stoppers, Medium Length
Ace GlassMedium length standard taper stoppers, size 7/15, 10/18 and 12/18 are solid, all others are hollow.
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SYNTHWARE PTFE Stoppers
Kemtech AmericaPTFE Stopper, Standard Taper, Synthware, Various Joint Sizes Available, with handle for easy griping.
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