Lab Stoppers

Lab Stoppers

Products (163)

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  • Stopper, Glass

    Ground glass stopper for 7/10 or 14/20 joint, for use with microscale equipment. The Ace Glass Stopper is designed to provide a secure seal for laboratory containers, ensuring that contents remain uncontaminated and contained. Made from high-quality glass, it is ideal for applications requiring a...

  • Serrated natural rubber septa red rubber

    Closure 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...

  • Serrated natural rubber septa white rubber

    Closure 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...

  • Suba-Seal® septa white rubber

    Well-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...

  • Septum stopper, 20mm Blue Butyl Rubber

    Manufactured 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  

  • HDPE Stopper No 16

    These blue and white No. 16 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...

  • Silicone Stoppers with Holes

    DWK Life Sciences (Kimble)

    General purpose single-hole silicone rubber stoppers. Steam autoclavable Opaque yellowish-white color Silicone stoppers with holes are manufactured from pure silicone rubber

  • 13 MM SEPTA, TFE/SIL

    DWK Life Sciences (Wheaton)

    13 MM SEPTA, TFE/SIL

  • Stopper 19/22

    These 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...

  • One-Hole Rubber Stoppers

    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.

  • Polyethylene stopper Joint

    Nonthreaded, wide, thick flanges. Synonyms: flask stopper; flask stoppers; stoppers

  • Stoppers, Lyophilization with Ultra Pure Formulation

    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)...

  • Safe-Lab® Joint Stirrer Bearings

    Includes two replacement PTFE bushings. Not autoclavable. Fits stirring rods with 10mm diameter. Includes extraction nut to effortlessly remove stopper from flask

  • Polyethylene Stoppers

    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

  • Spherical Cap Type Stopper

    Sleeve Type Septum Stopper made from natural white rubber. Ideal for a variety of laboratory settings, this Spherical Cap Type Stopper provides a safe and reliable solution for sealing containers. Crafted with meticulous attention to detail, it ensures the containment of substances within glassware...

  • WHEATON® COMPLETEPAK 13 mm Sterile Red Flip Seal

    Sterilized, off-the-shelf, ready-to-use (RtU) primary packaging components 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 (Vials and Stoppers), USP <85>/EP...

  • Snorkel Stopper Taper 38

    With 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 and...

  • Precision Seal® rubber septa red

    The 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...

  • SYNTHWARE Spherical Glass Penny-Head Stoppers

    Penny-Head Stopper,Glass, Sperical Joint, Synthware, Joint: 35 socket, Hollow stopper for use with spherical socket joint.

  • Borosil® Amber Solid Penny Head Glass Stoppers

    Borosil® Amber Solid Penny Head Glass Stoppers are with Interchangeable Ground Joint and can be used with Volumetric Flask of 5645, 5647 families or for other suitable joints. Manufactured with low extractable quality grade USP Type I, 3.3 Borosilicate Glass confirming to ASTM E438 Class A...

  • Rigid PTFE sleeve Joint

    Robust, PTFE sleeve with substantial grip-ring for repeated use and ease of handling. Transverse trapezoidal sealing rings provide grease-free, high-vacuum performance at temperatures up to 280C. Synonyms: ptfe sleeves

  • 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

  • Suba-Seal® silicone rubber septa

    •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 neck,...

  • Suba-Seal® septa red rubber

    Well-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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