100% natural cork

Flexible fins on cap allow for tight fit that will not damage the cuvette.

Use these LDPE foam-lined caps are for general-purpose HDPE bulk separate containers.

Order these closures, which are available in multiple colors to help identify reagents, to complete your dropper bottle system.

Hollow stoppers, closed at bottom, conform to ASTM™ E 675-94

Available in natural (clear) or choice of four colors

Stoppers are used with laboratory glassware such as flasks, mixing cylinders and separatory funnels.

Choose this high-quality septa cap, which meets EPA performance-based specifications for Volatile Organic Analysis, to use with our septa vials, bottles and jars.

Variety of sizes available

Stoppers are used with laboratory glassware such as flasks, mixing cylinders and separatory funnels.

For research and parenteral drug applications

For Falcon Round-Bottom Tubes

For use with flask and separatory funnel

Flexible GLS 80™ connection system for the use of semi-rigid hoses.

PTFE faced septa provides barrier for product contact

Flask Length

Hollow stopper fits into the neck of the glassware apparatus. Series 774261 may be used at up to 125°C for up to 8 hours.

Designed for disposable test tubes.

Ensure leakproof performance with these colored, polypropylene closures with 20-415 finish. Closures are one-piece and linerless with integrally molded seal ring.

Select these replacement septa for specific vials and septa bottles with 24-414 open top caps.

Choice of coarse (C) or extra-coarse (EC) fritted disc

Provide airtight covers

Corks are cut from high-quality wood and are selected to meet superior standards

For unlined aluminum seals

Secure-fitting Thermo Scientific™ Nalgene™ Replacement Screw Closures and Gaskets for Nalgene Carboys provide leakproof† service

Caps for use with Heidolph distillers

For use with open-top PBT caps

Choose from variety of sizes and taper types

Suitable for storage and containment of volatile solvents, sensitive compounds or corrosive chemicals

Provide airtight covers