Lab Stoppers
This category includes a variety of stoppers, each tailored for specific needs. Rubber stoppers, known for their flexibility and tight seal, are perfect for general use in flasks and test tubes.
Convertible stoppers offer versatility, easily adapting to different lab apparatuses. Color-coded stoppers enhance lab organization, allowing for quick sample identification and reducing the risk of cross-contamination.
Lab stopper options include plug-type rubber sleeve stoppers, which provide a secure fit for more complex laboratory setups, ensuring airtight conditions for sensitive experiments.
Lab stoppers, ranging from simple rubber variants to specialized butyl stoppers and glass stoppers, are indispensable for ensuring the safety and accuracy of laboratory work.
Their ability to effectively seal and protect makes them an essential in any lab environment.
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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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Rubber Stoppers
United Scientific SuppliesRubber Stoppers packaged in convenient 1lb bags. Available in solid, 1 hole, and 2 hole versions.
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Rubber Stoppers, Two Holes
ChemglassSimilar to CG-3026 and CG-3027 except with two holes. 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…
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Rubber STOPPER,#0
Bellco GlassA laboratory rubber stopper is mainly used in chemical laboratory in combination with flasks and test tub. Specifications: Material: Rubber Flask Closure
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Pennyhead stoppers are generally used in flasks and separatory funnels.
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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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Solid PTFE stopper Joint
MilliporeSigmaMachined from solid PTFE with trapezoidal seals for medium to high vacuum performance up to 280C (540F). Synonyms: flask stopper; lab stopper; stoppers
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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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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
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Polyethylene Stoppers
ChemglassInexpensive, 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
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Stopper Assortment
PlasticoidMade 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
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Stopper, Michel-Miller
Ace GlassPrecision made PTFE stoppers for use at either end of the 5795 Michel-Miller, 5820 Columns or all 7644 Ace-Threds when a leaktight seal without the use of O-Rings is desired. Use 5846- 52 and 7855-829 for #50 size.
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Poly-Cone Universal Joint Adapter
SP Bel-ArtThis precision-engineered adapter may be cut with a fine-tooth saw or sharp knife into various adapters, such as individual bushings, stirrer bearings, thermometer and gas inlet tube supports, drip-tips, funnels, trap connectors for tubing, etc. Forms a continuous standard taper inside and…
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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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Sleeve Stoppers & Plugs
PlasticoidHollow 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…
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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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Stoppers, Glass, Full Length with Hook
Ace GlassFull length glass standard taper stoppers with hook.
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WHEATON® COMPLETEPAK 20 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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Precision Seal® rubber septa red
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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HDPE Stopper No 13
CorningThese 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…
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Polyethylene stopper Joint
MilliporeSigmaNonthreaded, wide, thick flanges. Synonyms: flask stopper; flask stoppers; stoppers
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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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Rubber STOPPER,#00
Bellco GlassA laboratory rubber stopper is mainly used in chemical laboratory in combination with flasks and test tub. Specifications: Material: Rubber Flask Closure
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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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HDPE Stopper No 22
CorningThese blue and white No. 22 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…
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XX2014718
MilliporeSigmaDesigned for use with Millipore stainless steel vacuum filter holders Stopper Size: No. 8 Hole I.D.: 9.5mm (3/8 in.) Silicone rubber construction
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Sani-Tech® Silicone Stoppers
Saint Gobain - Bioprocess SolutionsSani-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…
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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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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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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