Test Tube Caps

Crafted from durable polypropylene, this white cap is designed to fit securely on 22-400 bottles, ensuring a tight seal and reducing the risk of leakage or contamination. The foam liner, composed of polyethylene, adds an additional layer of protection, making it an ideal choice for storing and...

Nalgene™ HDPE Tamper Evident Closures are specially designed for use with PET/PETG square media bottles. Available in 38-430 finish Natural HDPE closures are ADFC (Animal Derived Component-Free) Fits Nalgene PET and PETG Media Bottles with 38-430 neck finish (except 125mL PETG Media Bottles)...

Our PTFE NMR/EPR Tube Caps are machined to exact specifications with smaller gyroradius and more homogeneous mass distribution than disposable caps providing better spinning stability. They are recommended for experiments at high - ultra high field and those using Chloroform as the reference...

Manufactured from red PTFE silicone. Ideal for screw thread vials. Specifications: Autoclavable Material: Ptfe Silicone Size: 10mm Septa Thickness: 0.060" Case Quantity: 1000

The Corning® orange polypropylene caps are autoclavable at 121°C, have a GLS80 thread and use a linerless plug seal design for efficient sealing. Cap Style: Plug Seal Cap Material: Polypropylene Cap Color: Orange Thread Finish: 80 GL Feature: Reusable Sterile: No

MicroLiter 20mm crimp top seals are available in multiple colors and septa types.

MicroLiter's 11mm AlumiTin crimp-top autosampler vial seals are available in multiple colors and septa types.

28-410 STARLINE CAP, PP NAT

Pre-assembled Open Top Caps 100/Case

Six styles of caps to choose from and two sealing types: O-ring seal and lip seal The cap is molded with a deep internal lip that fits snugly against the interior wall of the tube thus preventing the contents from coming in contact with the seal or threads, thereby reducing the chances of sample...

These standard 18-410 G.P.I. thread screw caps are replacement caps for the No. 5650 PYREX® volumetric flasks. Caps have a durable cone-shaped polyethylene liner Poly-seal cap insures a leak-resistant closure and no contamination when working with most common reagents

FOAM PLUGS FOR TEST TUBES AND LABORATORY FLASKS, INDENTI-PLUGS, Economical Open-cell, 1.45 lb. uniform-density foam Breathable and non-absorbent Use over a wide temperature range Autoclavable Chemical resistant Proven safe for algae culturing Identi-Plugs® are for use with test tubes and flasks....

Molded inner ring of linerless cap seals into the neck of a GL45 media bottle.  Caps are autoclavable to 140ºC.

These reusable Corning® caps are fabricated specially formulated resin to resist the effects of temperature and steam in autoclaving. Caps have GPI 24-400 threads and are provided with a glued-in rubber liner over which is firmly bonded a Polytetrafluorethylene (PTFE) interface to provide a...

Eliminates fatigue and soreness of hands and fingers from the repetitive task of applying test tube caps. Test Tube Capper fits comfortably in the palm of your hand. Use tip to apply pressure and securely cap tubes. Capping can be performed with test tubes in a rack or while being held in the hand...

Color Coded - natural, red, green, yellow and blue Ideal for use in laboratory settings, these culture tubes come equipped with polypropylene closures, which ensure a secure seal. The tubes and their closures are autoclavable, ensuring that they can be thoroughly sterilized for safe and repeated...

White polypropylene closure, Unlined Ensure the utmost protection for your valuable samples with these high-quality Solid Top Closures. Unlined for simplicity and efficiency, these caps offer a robust sealing solution for a wide variety of bottles. Their solid design reduces the risk of accidental...

Closure of one-piece construction with a seal achieved due to a unique inner sealing ring. Intended for use with 73750, 73760 and 73770 disposable culture tubes and 73785 disposable centrifuge tubes. Natural polypropylene Autoclavable Designed from ASTM Specification E982

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...

This tap makes it quick and easy to pour liquids from one container to another. Easy-action lever tap Works well with Cubitainers® and vented rigid containers Features an excellent flow rate of 72 ml/sec up to 155 ml/sec. Typical markets include beverage, liquid food, household, and chemicals.

Includes 5 stainless steel capsules and 20 gold-plated copper seals. For DSC runs where high pressure is expected in the capsule, we recommend you use high pressure capsules. The capsules are safe to handle due to a bursting disk on the cover of the capsule which allows the sample to escape if the...

Choose the PTFE/Silicone Septa to resist coring and provide great resealability. These septa are available in a variety of colors for easy sample identification.

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

Closure System for 2D SAFE Tubes 96 SBS: Push or septum caps are the cheaper alternative to screw caps. They are usually used if storage is limited to a few years, the storage temperature does not fall below -80°C and the samples only have to be stored and not shipped. Through the - also...