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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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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Solid Rubber Stoppers
PlasticoidStandard 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.
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No. 8 Silicone Stopper
Vee Gee ScientificSIBATA 47mm Filtration Filter Holder Components are available as replacement components, or to create a customized filter holder. Available with fritted glass support base for general and biological applications, or with removable stainless steel screen support base and PTFE gasket for ultraclean…
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Stoppers, Lyophilization with Ultra Pure Formulation
DWK Life Sciences (Wheaton)Ultra Pure Lyophilization Stoppers are made from a bromobutyl rubber compound containing the highest level of chemical purity. These stoppers demonstrate a very low level of moisture absorption and are ideal for most lyophilization applications. They are compatible with Water for Injection (WFI)…
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Stopper Pressure Relief
Glas-ColWith a patented Glas-Col Snorkel Stopper, you'll never again have to take time to open the stopcock and relieve pressure when vigorously shaking a separatory funnel, because our Snorkel Stopper does the task automatically. If you use a Glas-Col shaker, you can simply load the funnels onto it…
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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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SYNTHWARE Solid Glass Penny-Head Stoppers
Kemtech AmericaPenny-Head Stopper, Glass, Solid, Synthware, Various Joint Sizes Available.
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Glass Pennyhead Stopper, Standard Taper 24/40
DWK Life Sciences (Kimble)Hollow plug type With sealed bottom and vertical penny head
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SYNTHWARE Septum Stoppers, Sleeve Type
Kemtech AmericaSleeve Type Septum Stopper made from natural white rubber.
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Stoppers
DynalonStoppers - 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) …
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Stopper Top Pk144
DWK Life Sciences (Kimble)Top Stoppers for Incubation Flasks. Rubber stoppers for flask top and sidearm provide a secure double seal Top stopper has off-center hole for insertion of center well Fits both 10 and 25 mL flasks
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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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Precision Seal® rubber septa cap red
MilliporeSigmaEngineered for a "push on" fit in NMR tubes and ampules. The unique design provides a penetration point for cannulation and a dual seal inside the tube and on the outer sleeve. Will not break delicate, thin-wall tubing. Manufactured from one certified raw material formulation for absolute…
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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 …
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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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Snap-On Stoppers
DWK Life Sciences (Wheaton)Natural red rubber or gray chlorobutyl/45 material 7 x 13 or 13 x 20 mm sizes
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Serrated natural rubber septa white 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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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…
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Stopper, Glass
Ace GlassGround glass stopper for 7/10 or 14/20 joint, for use with microscale equipment.
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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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Neoprene Rubber Stoppers
PlasticoidSolid 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.…
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Rubber STOPPER,#2
Bellco GlassA laboratory rubber stopper is mainly used in chemical laboratory in combination with flasks and test tub. Specifications: Material: Made from Rubber
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Assorted 1 Hole Rubber Stoppers
GSC International, Inc.1 pound package of assorted 1 hole rubber stoppers. Sizes and quantities are as follows: Size 00: 4 each Size 0: 4 each Size 1: 4 each Size 2: 4 each Size 3: 4 each Size 4: 3 each Size 5: 3 each Size 6: 3 each Size 7: 3 each
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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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PennyHead Glass Hollow Stoppers
Across InternationalAi 24/40 pennyhead glass hollow stopper. Glass material: high borosilicate glass 3.3.
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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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Twist It Stoppers, Assortment Pack
ChemglassThree twist-off seals permit easy conversion from a solid to a one, two, or three-hole stopper. Soft, resilient, natural rubber demonstrates exceptional aging characteristics and withstands repeated autoclaving. Autoclavable at 250°F for 30 minutes under water or steam conditions only (not…