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  • Stainless Steel Closures for Tubes

    Bellco Glass

    Excellent for Culture Tube and Flask Closures. 305 Stainless Steel, Non-Corroding. Lanced fingers grip firmly after repeated autoclaving.

  • Certified ULTRAPure Septa 11mm Crimp Caps


    MicroLiter Certified ULTRAPure Septa caps ultra-low bleed silicone inserts in 11 mm silver aluminum crimp caps are available in non-silted and silted versions. Ultra-low bleed blue/teal silicone Shore A is laminated to white PTFE film, 3 mm thick. Silver aluminum crimp caps are lacquer coated. …

  • Aluminum Seals with PTFE-Faced Silicone Septa

    DWK Life Sciences (Kimble)

    Medium durometer PTFE / silicone septum Allows for good resealability, core resistance, multiple injections and easy penetration

  • GL Closures & Accessories

    DWK Life Sciences (Duran)

    Premium pour caps & ring Compound formulated without colour dye to avoid risk of leaching. Service temperature limit from –196°C to +200°C. Very high chemical resistance. High leak tightness through use of PTFE coated silicone seal. A matching TpCh260 pouring ring is also…

  • Preassembled R.A.M.™ 9mm Ribbed Screw Thread Cap with Fixed PTFE/Silicone Septa

    J.G. Finneran

    Bonded septa in the closure provides extra resealability.

  • Black Polypropylene Linerless Glass Dropper Assembly


    Dropper Assemblies feature a glass tube with black polypropylene closure and rubber squeeze bulb. Tip opening has a 3.0mm outside diameter.

  • Black Phenolic Polyseal™ Cone Lined Caps


    Black Phenolic Polyseal™ Cone Lined Caps form an exceptionally tight seal and offer a good chemical barrier. This liner molds itself around the sealing areas of the finish as the cap is screwed on, virtually eliminating leakage, evaporation, contamination, binding, and backing off.

  • 22-400 CAP, PP WHT, FMD PE LNR

    DWK Life Sciences (Wheaton)

  • 13mm Flanged Plug Cap

    Globe Scientific

    Plug cap, flanged. Fits most 13mm tubes Polyethylene (PE) Assorted colors available

  • Screw Caps for 5.0mL MacrewTube™ Microcentrifuge Tubes


    Screw cap for 5.0 ml MacrewTube™ Microcentrifuge tubes. Polypropylene. RNase, DNase, Pyrogen and DNA free. Autoclavable. Temp range +121 °C to -196 °C.

  • Disposable Aseptic Transfer Caps for Plastic Erlenmeyer Flasks


    Corning® Erlenmeyer Flask Aseptic Transfer Caps are sterile (10 -6 SAL), individually double bagged and fit the 2L Corning® Polycarbonate Erlenmeyer flasks. These aseptic transfer caps can also be used on Corning 850 and 1700cm 2 plastic disposable roller bottles. Venting port…

  • SYNTHWARE Teflon Septum

    Kemtech America

    Teflon Septum made from PTFE. Size: 14, 25, and 32mm available.

  • PTFE Cap Liners

    J.G. Finneran

    Solid virgin PTFE liners can be manually inserted into closure and maintains a snug friction fit. PTFE liners are also available in other sizes and thicknesses.

  • 12/13mm Snap Cap for Tubes

    Globe Scientific

    Fits most 13mm glass tubes Fits most 13mm glass evacuated blood collection tubes Fits most 12mm plastic culture tubes Thumb tab for easy removal Polyethylene (LDPE) 1000 caps per sealed bag Assorted colors available These colorful snap on closures are an effective way to recap 13mm…

  • Target DP 9mm Vial Closures

    National Scientific

    National Target DP 9mm closures are designed to help chromatographers achieve more reliable and efficient sample analysis. Designed to accommodate nearly all chromatography autosamplers fitted for 12 x 32cm vial trays, the C5000 series closure effectively eliminates septa push-through and…

  • Polypropylene Screw Closures

    Thermo Scientific Nalgene

    1228A16, A17 and A25 are for use only with NALGENE narrow- and wide-mouth bottles and Erlenmeyer flasks 1228A27 is for use with carboys Autoclavable Available in natural and amber

  • Black Phenolic Screw Caps

    DWK Life Sciences (Wheaton)

    These autoclavable caps are designed to ensure the ultimate in product safety. The liners are white styrene-butadiene faced with Teflon.

  • PYREX® Polyethylene Snap Caps


    These blue PYREX® polyethylene caps provide an economical closure for some volumetric flasks (See Nos. 5580, 5581 and 5600).

  • Accessories for Spectrophotometer Cuvettes

    Globe Scientific

    The 12-place cuvette holder is made from polyethylene (PE) and holds 12 cuvettes in place for preparation work, storage and protection from tipping over. When in storage, the racks are stackable. Dimensions: 170mm x 50mm x 15mm. The caps are produced from low density polyethylene (LDPE) and…

  • PUREGRIP® HPLC Solvent 38-430 Cap Assemblies

    Foxx Life Sciences

    Foxx Life Sciences PUREGRIP® HPLC Solvent Reservoir Caps and Bottle system offer the safest and most ergonomic lab safety solution in the industry. This system come with VersaCap®, a Class VI PTFE Manifold, chemically resistant Viton O-Ring & an Air Inlet Valve combined with a Foxx…

  • 11mm Snap Caps (with Starburst PTFE/Silicone Septa)


    MicroLiter offers products for both LC and GC applications.

  • BiMetal Seals, Magnetic

    J.G. Finneran

    The BiMetal Seal is comprised of tin and aluminum materials. The outer surface (red or blue) is aluminum and the inner diameter is a silver tin.

  • Bulk Black Phenolic Caps

    DWK Life Sciences (Kimble)

    Choice of six liners Screw thread

  • SAFE® Cap Semi-Automated 8-Channel De-/Capper for Screw-Caps

    LVL technologies

    Thomas No. 1148R80 & 1148R81 (for internal thread tubes) Mobile, battery-operated 8 channel decapper for table use Capping/Decapping 8 tubes at once Integrated dropping mechanism   Thomas No. 1148R82 (for external thread tubes) Semi-Automated…

  • Caps for Sample Cups

    Globe Scientific

    These caps are designed specifically for use on our popular line of multi-purpose sample cups and are produced from polyethylene (PE). The caps are available with a solid or cross-cut pierceable top and they snap securely in place on each of the sample cups.

  • 20 mL Amber Vial

    J.G. Finneran

  • Screw Caps for 50mL Tubes

    Evergreen Scientific

    Multiple Uses Ideal for general purpose laboratory work. The 30 ml tubes are also being incorporated as one of the leakproof primary containers in shipping infectious specimens. 30 ml tube with spork is widely used in parasitology specimen transport Leakproof screwcaps Vacuum-chamber…

  • White Polypropylene Cap With Teflon Liner

    DWK Life Sciences (Wheaton)

    Ideal for high purity chemicals, strong acids, solvents Excellent for environmental samples, pharmaceuticals and diagnostic reagents Teflon-faced foamed polyethylene liner offers the excellent chemical resistance of Teflon with the compressibility and sealing properties of polyethylene foam.

  • Ready assembled screw closures/caps, N 24


    Open and closed top closures and caps with thread 24-414 Due to their size mainly used as bonded closures for a firm fit of the septum Recommended for environmental analysis: screw closure with center hole and silicone / PTFE septum (702058) Closed top closures for sample storage …

  • Snap Cap No. 4 Cs 6

    DWK Life Sciences (Kimble)

    Snap Caps are designed for KIMAX volumetric flasks Yellow polyethylene Caps may not be usable with items lacking necks specially tooled to proper diameters and contours Fits 100mL volumetric flasks

  • 8-425 Screw Thread Caps with Inserted Septa

    National Scientific

    8-425 Screw Thread Caps with Inserted Septa Pre-assembled caps and septa are convenient and minimize contamination from handling Phenolic caps can be autoclaved Kim-Lok™ cap/septum assemblies feature a molded centering ring to eliminate septum movement during injection …

  • Narrow Mouth and Wide Mouth Bottle Replacement Closures

    Thermo Scientific Nalgene

    Fit Thermo Scientific™ Nalgene™ Narrow Mouth and Wide Mouth Bottle Replacement Closures onto Nalgene narrow mouth and wide mouth bottles.

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