Screw Cap

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Screw Cap
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  • Screw Caps are low profile caps fitted with ethylene propylene sealing o-rings. Screw Cap II is manufactured from polypropylene and fitted with a silicon o-ring. Tether (loop) Caps are low profile caps with a molded tether and a ethylene/propylene sealing o-ring. Tether (loop) Cap II…

  • SuperClear™ Screw Cap Microcentrifuge Tubes are ideal for any sample processing application. Excellent for frozen storage or when working with hazardous or valuable materials. O-rings are made from silicone to insure a leakproof seal and caps accept color coding inserts. Sterile tubes are…

  • E-C Vials w / Rubber Lined Caps, Clear, 2 ml

    DWK Life Sciences (Wheaton)

    …to protect light-sensitive samples. Black phenolic screw caps are packaged separately and inserted in the box with the vials. It is suggested to use 14B rubber lined caps for aqueous samples and PTFE faced 14B rubber lined caps for Organic samples. Replacement caps can be purchased separately.

  • Vial Sample S / T w / PTFE Cap 8ml Cs144

    DWK Life Sciences (Kimble)

    Clear glass sample vials Closed-top white urea caps with PTFE-faced white rubber liners, attached Packaged in corrugated trays with partitions Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements

  • Purchasing assembled bottles reduces sample contamination and streamlines ordering and inventory needs. Amber color protects contents from UV Light. Polycone caps seal the inner neck of the bottle when screwed in place.

  • For transport, storage and sample processing in the laboratory.

  • Polypropylene Open-Top Screw Caps

    DWK Life Sciences (Wheaton)

    Bonded Teflon®-Faced Silicone Liners White autoclavable open-top caps have a bonded Teflon-Faced Silicone Liner making them ideal for storage and retrieval of volatile solvents, sensitive compounds and corrosive chemicals. The liners consist of 0.055” of Silicone and 0.005” of…

  • GL Closures & Accessories

    DWK Life Sciences (Duran)

    …can be tightly closed. Pouring Rings Permits clean, drop-free use. Plastic Screw Caps Suitable for silicone seal for piercing (septa). Silicone Rubber Seals Suitable for PBT screw cap with aperture. Heat resistance: 130°C (vapour) and 200°C (dry heat). Silicone is…

  • Screw Caps for Microtubes

    Globe Scientific

  • Deep O-ring caps Upgraded polypropylene for superior quality Usable up to 5000 g. Silicone O-rings in caps seat against reverse bevel in tube to eliminate contamination. Skirted tubes self-stand. Easy to open, even with gloves. Configurations shown in listings.

  • Erlenmeyer flask with screw thread finish. Supplied complete with white rubber lined black phenolic cap. Long skirted caps can be loosened without falling off while shaking flask.

  • Screw Caps for Sample Vials

    National Scientific

    Open top without septa Polypropylene screw cap will not contaminate sample with syringe needle insertion-unlike phenolic caps that can flake.

  • …top caps (9711B25, B55) Borosilicate glass Consists of screw-necked vials and 9711C10 series open-top screw caps. Septa are not supplied. 9711B25 use Septa 9711D35 9711B55 use Septa 9711D45 Screw Caps (9711C10 to C45) Open-top Phenolic Screw Caps are for use with 9711D10 series Septa. Cap

  • Vials with vinylite liners Consisting of 9710F12 series borosilicate glass vials and attached 2386C10 series caps fitted with cork-backed vinylite liners Vials with Caps (9710D13 to D73, 1233Z28 to Z37) Vials without Caps (9710F12 to F82, 9711B45)

  • Screw Caps


  • Polypropylene screw tops are for wide opening screw top vials. Precision-fit septa provide an evaporation-proof seal.

  • Closures for 9mm Screw Top Vials

    Thermo Scientific Sun SRi

    High-quality polypropylene closures fit all SUN-SRi 12x32mm screw thread vials Pre-assembled septa reduce risk of contamination during sample prep Vial and cap profile are compatible with a wide variety of instruments, including robotic autosamplers Closures are shipped in sealed polybags to…

  • Standard Insertable Screw Caps Available with and without tether Easy 3/4 turn to open and close Synthetic O-Ring Available in a variety of colors Cap insert chips facilitate easy branding or organization.

  • Screw Cap Test Tubes

    Globe Scientific

    These multipurpose screw cap test tubes are offered in convenient sizes to suit a variety of applications. The screw caps are designed to be leak-tight allowing the tubes to be used for storage or transport.

  • From the SureSeal family of sterile tubes you trust comes MTC Bio’s new 2.0mL screw cap microcentrifuge tubes. Made from ultra-clear polypropylene, with crisp printed graduations, SureSeal 2mL screw-cap tubes offer the best visualization of sample on the market today! May be centrifuged at up…

  • Screw Cap Sample Vial

    DWK Life Sciences (Wheaton)

    In Lab File® Carton Of “200” borosilicate glass, with marking area and size 13-425 screw cap; cap has butadiene-styrene rubber liner Capacity: 4 mL ; height x diameter: 48 x 15 mm In Wheaton Lab File carton containing two pull-out drawers.

  • …proper support in appropriate rotor 5mL Screw Cap Macrocentrifuge Tubes Single turn threaded caps seal easily and securely Graduated in 0.5mL increments Available sterile in bags or foam racks and non-sterile with tubes and caps packed separately Suitable for use from…

  • Screw Cap Centrifuge Tubes

    Stockwell Scientific

    Our 15mL and 50mL conical centrifuge tubes are designed for the demanding and stressful conditions encountered in today’s laboratories. Our engineers are continually seeking to improve these products to perform at levels beyond your expectations. Our 50mL tubes are rated at 10,000 RCF. Printed…

  • 8-425 Screw Caps with Septa

    Agilent Technologies

    8-425 Screw Caps without Septa (2714S28) Open top polypropylene screw caps without septa are recommended instead of phenolic caps. Phenolic is a sulfur-based product that can flake and contaminate samples when syringe needle pushes through the septum. 8-425 Screw Caps with Septa (2714S29) Open…

  • Screw Caps with Rubber Grips & Molded O-Ring. Ultra-pure polypropylene with an inert TPE O-ring molded directly into the cap. Rubber grips allow for effortless opening and closing--even when frozen. Contrasting color strips enable easy branding or organization. Easy 3/4 turn to open and close.

  • Open top polypropylene screw caps supplied with PTFE faced silicone septa. Supplied in packages of 144.

  • Available with and without tether. Easy 3/4 turn to open and close. Synthetic O-Ring. Available in a variety of colors.

  • Ready assembled open or closed top black screw closures 8-425 and plain caps with no liner Closures available with a broad variety of septa materials Septa material used for the production of the N 8 screw closures has – aside from physical inspection – also been tested…

  • …improve sealing. Thermo Scientific™ 9mm Clear Glass Screw Thread Vials are 2mL, 12x32mm and built with Advanced Vial Closure System (AVCS). This innovation not only prevents septa push through, but provides a stop point for the cap to prevent over- or under-tightening and provide an optimal,…

  • Screw Cap Microcentrifuge Tube Caps feature o-rings to form a secure seal. Optimized for secure short term storage in low temperatures, these autoclavable screw caps are available in a variety of colors, and adapt to your scientific experiments.  Screw Cap Microcentrifuge Tube Caps Design…

  • These reusable Corning® caps are fabricated specially formulated phenolic resin to resist the effects of temperature and steam in autoclaving. Caps are provided with a glued-in white rubber liner.

  • Plastic Screw Caps With Rubber Liner

    DWK Life Sciences (Kimble)

    Deep form, of black phenolic resin with cemented rubber liner. As supplied with 4893D11 series Flasks and 9210E23 series Test Tubes. Can be autoclaved for 20 minute periods at 121°C. Rubber liners have been found to be satisfactory for tissue culutre. Cap size shown is GPI thread finish.

Attention Thomas Scientific Customers

Due to the current pandemic, lead times for PPE items are longer than what is listed on our website. Please expect shipping delays of all PPE products during this time.

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