Test Tube Caps

Use Thermo Scientific™ SureSTART™ 18 mm Precision Screw Caps with screw vials that have an 18 mm opening, including our SureSTART 10 mL and 20 mL Screw Top Headspace Vials (Level 3). Select Level 3 products for ultimate performance and sensitivity from your...

Black phenolic screw cap Poly-Seal liner is manufactured from low density polyethylene Unique cone liner design offers superior torque retention and excellent sealing characteristics It is recommended that liner be tested prior to use for leak resistant applications

20-410 STARLINE CAP, PP WHT

Efficiently seal your laboratory bottles with this durable 38-400 cap. Constructed from high-quality polypropylene, it offers excellent resistance to a wide range of solvents and other chemicals, ensuring the integrity of your samples. The cap features a TFE liner, providing a superior barrier and...

Manufactured from red PTFE silicone. Ideal for screw thread vials. Specifications: Autoclavable Material: Ptfe Silicone Size: 9mm Septa Thickness: 0.040" Case Quantity: 1000

Shallow, thin-walled aluminum cap for reinforcing XRF pellets. Commonly used in the production of pressed power sample disks for XRF but also used for OES and other analytical techniques. Forms the bottom and sides of the finished pellet. Features Makes sample disks easier to remove from the pellet...

Orange Caps fit empty 2mL FastPrep Tubes and are used in Fastprep systems to hold sample for Homogenization. Available separately for those who wish to fill their own Lysing Matrix Tubes. Colored screw cap with o-ring.

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...