Stoppers and Closures

Caps, septa, stoppers, and other closures in a range of sizes, colors, and material compositions that provide a leak-proof, spill-proof barrier for jars and bottles during storage and transportation. Compatible with a variety of bottle and jar types.
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Closure Included

I-Chem™ Open-Top Septa Caps, 24-414mm, bonded septa, bulk Thermo Scientific™

Thermo Scientific™ Septa Caps include a bonded-in 0.045 in. thick septa. The same high quality septa caps used on our Thermo Scientific VOA Vials, septa bottles and septa jars. Processed to meet EPA performance–based specifications for Volatile Organic Analysis.

Natural Rubber Septums Thermo Scientific™

This Thermo Scientific brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo...

Filtration Hardware, Accessories, and Spare Parts

Designed for use in a wide range of applications, Thermo Scientific™ Nalgene™ filtration hardware and accessories can be used in conjunction with our various lines of filtration devices.

PTFE-Lined Closed Caps Thermo Scientific™

Thermo Scientific™ PTFE-Lined Closed Caps are replacement caps for Thermo Scientific glass environmental sample bottles, jars, jugs and vials. The same high quality PTFE-lined caps used on our Thermo Scientific glass environmental sample containers.

LDPE Foam-lined Polypropylene Caps for Bulk Separates Thermo Scientific™

Thermo Scientific™ LDPE Foam-lined Polypropylene White Caps are for general-purpose HDPE bulk separate containers. The same high quality caps used on our Thermo Scientific certified HDPE environmental sample containers. Bottles sold separately (013-series and 012-series).

Septum for AcroSeal™, teflon/black elastomer, size: 43 x 3 mm Thermo Scientific™

This Thermo Scientific brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo...

Septum for AcroSeal™, butyl rubber/teflon, size: 43 x 3 mm, Thermo Scientific™ Thermo Scientific™

This Thermo Scientific brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo...

I-Chem™ Loose Septa for 24-414 Open Top Caps Thermo Scientific™

Thermo Scientific™ Loose Septa are replacement septa for Thermo Scientific VOA vials and septa bottles with 24-414 open top caps. Loose septa may be used as replacement parts for Thermo Scientific VOA vials and bottles with unbonded septa. Fits the standard 24-414 open top cap.

Nalgene™ Centrifuge Bottle Sealing Cap Assembly Thermo Scientific™

Provide an added level of reliability when running at maximum speeds with the Thermo Scientific™ Nalgene™ Centrifuge Bottle Sealing Cap Assembly, for use with selected 250 and 290mL Thermo Scientific™ Nalgene™ centrifuge bottles with 38mm closure size.

Nalgene™ Autoclavable Septum Closure, Autoclavable, 38-430 size Thermo Scientific™

Enable aseptic injection of reagent or sample withdrawal without compromising sterility or integrity of contents with Thermo Scientific™ Nalgene™ Autoclavable Septum Closure, suitable for use with any bottle or container with 38-430 neck, including Nalgene culture vessels.

Nalgene™ Polypropylene Fluid-Transfer Closure Thermo Scientific™

Perform fluid transfer in the lab or field with the 70mm Thermo Scientific™ Nalgene™ Polypropylene Fluid-Transfer Closure. Closures are compatible with Nalgene Mason Jars (Cat. No. 2115), 125 and 500mL Nalgene Straight-sided jars (Cat. Nos. 2116, 2117, 2118, 2119), sold separately.

Nalgene™ Colored Polypropylene Closures with 28-415 Finish Thermo Scientific™

Ensure leakproof† performance with Thermo Scientific™ Nalgene™ colored closures — one piece and linerless with integrally molded seal ring. The opaque closures protect contents from UV light when used with opaque bottles.

Nalgene™ Septum Closures: Sterile, Bulk Pack, 38-430mm Thermo Scientific™

Combine the elastomeric sealing of silicone with nonreactive polytetrafluoroethylene reagent contact surfaces in Thermo Scientific™ Nalgene™ Septum Closures, for use with Nalgene™ Sterile PET & PETG media bottles.

Nalgene™ HDPE Closures: Sterile, Bulk Pack Thermo Scientific™

Seal PET/PETG square media bottles with Thermo Scientific™ Nalgene™ HDPE Closures, which provide a reliable and leakproof† seal. These reliable, high-density polyethylene closures are gamma irradiated to provide a 10-6 Sterility Assurance Level (SAL).

Nalgene™ Carboy Replacement Screw Closures and Gaskets Thermo Scientific™

Guarantee leakproof services with secure-fitting Thermo Scientific™ Nalgene™ Replacement Screw Closures and Gaskets for Nalgene Carboys.
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