Test Tube Caps

Metal caps offer the widest range of temperature tolerances and are very resistant to fracture from impact. Metal caps are great for industrial and food applications. A metal closure is manufactured from either steel (coated with anti-corrosive coating of either chromeplate or tinplate) or aluminum....

SBS-format screw cap carriers to enable automated capping of 96-format sample storage tubes FluidX Cap Carriers are for manual use or for use with FluidX AperioTM Semi-Automated Capping and Decapping systems and XSD-Series Automated Capping and Decapping systems Supplied in case of 10, pre-filled...

11 mm cap Agilent Technologies products are intended for sale/shipment within the US only. International customers should contact their local Agilent Technologies distributor to place orders for Agilent Technologies products.

GL 45 screw cap with either two or three ports that have GL 14 thread. This is a flexible modular system which has four different hose diameters available: 1.6 mm, 3.0 mm, 3.2 mm and 6.0 mm that can be connected.Sterile pressure equalization is possible through use of membrane filter. Legal...

Septa are assembled, caps are ready-to-use. Enhance your laboratory's efficiency with the use of these high-quality magnetic crimp caps, N 20. These caps are specifically designed to provide a secure seal for your vials or bottles, ensuring the integrity of the contents and reducing the risk of...

The Finneran 9 mm ribbed open hole cap is used with threaded vials to ensure tight sealing of the stored sample. It is mainly used in research laboratories or in chemical industries. This cap is made of sturdy polypropylene material which ensures long lasting usage and durability.

Ideal for securing caps on bottles or containers, this 18mm cap screw is a practical and reliable choice for any science laboratory. This screw, finished in a silver tone, is made to last and designed to provide a secure fit, ensuring that the contents of the bottles remain uncontaminated. Its...

Bonded Teflon®-faced silicone liners White, autoclavable caps have a bonded Teflon-Faced Silicone Liner making them suitable for storage and containment of volatile solvents, sensitive compounds and corrosive chemicals.  The liners consist of 0.055” of Silicone and 0.005” of...

It was used for sealing 100 mL serum bottles fitted with gray stopper during analysis of biogas emission in lagoons

The red Corning® polybutylene terephthalate (PBT) high temperature caps have a GL32 thread, can be dry heat sterilized at up to 180°C and have a Polytetrafluorethylene (PTFE) liner for efficient sealing.

MicroLiter offers products for both LC and GC applications.

28-410 STARLINE CAP, PP WHT

The BrandTech sealing ring is compatible to use with dispensette valve blocks. The strong PTFE construction offers good durability and endures rigorous usage.

Ideal for laboratory use, these 8mm Aluminum Crimp Seals offer a reliable and durable solution for sealing bottles. Made of high-quality aluminum, these crimp seals ensure a tight, secure seal that withstands various environmental conditions. They are easy to apply, providing a practical, efficient...

Aluminum foil-faced pulp board liners Use these caps with organic solvents

Engineered for a "push on" fit in NMR tubes and ampules. The unique design provides a penetration point for cannulation and a dual seal inside the tube and on the outer sleeve. Will not break delicate, thin-wall tubing. Manufactured from one certified raw material formulation for absolute...

24-410 STARLINE CAP, PP BLU

GL 45 screw cap with either two or three ports that have GL 14 thread. This is a flexible modular system which has four different hose diameters available: 1.6 mm, 3.0 mm, 3.2 mm and 6.0 mm that can be connected.Sterile pressure equalization is possible through use of membrane filter. Legal...

Pliable closures for use with evacuated blood collection tubes and glass and plastic test tubes. They protect from contamination and prevent evaporation. Closure will not crack or pop off. Seals inside test tube or over tube rim. The 12mm and 13mm closures seal over the rim of either 12mm or 13mm...

Caps are designed to fit GL 45 threaded ware. Autoclavable Solid top polypropylene or open top with membrane A variety of cap colors available Red, high-temperature version made from PBT(polybutylene terephthlate)

Fits most 12mm, 13mm and 16mm plastic test tubes. Polyethylene Assorted colors available.

High temperature resistivity range – shatter/crack resistant and ideal for boiling Easy ¾ turn to open and close Translucent and Opaque Cap O-rings ensure leak-proof seal Translucent and Opaque Caps contain O-ring of easily visible contrasting color Caps are available in various colors...

Thermo Scientific* Nalgene colored closures are one-piece and linerless with integrally molded seal ring to ensure leakproof performance. The opaque closures protect contents from UV light when used with opaque bottles.

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