Test Tube Caps

Used to distinguish different types of samples in the lab, order with 50mL DigiTUBEs. Enhance your laboratory's safety and efficiency with Analytichem's DigiTUBE Screw Caps. These caps offer a reliable closure solution for a variety of laboratory bottles, providing a strong seal to ensure secure...

13-425/24-400 CONNECTION, BLK PHEN

Cap is made of polypropylene (PP), Seal made of thermoplastic elastomer (TPE) Cap receptacle for capper/decapper Storage at up to -196°C (LN2) Up to 13 different colors selectable Available as bulkware or on cap racks

The Sarstedt blue screw cap, with a durable construction, is an ideal accessory to have in any chemical laboratories, research facilities, manufacturing industries and pharmaceutical factories.

Ideal for high purity chemicals, strong acids, solvents Excellent for environmental samples, pharmaceuticals and diagnostic reagents Teflon-faced foamed polyethylene liner offers the excellent chemical resistance of Teflon with the compressibility and sealing properties of polyethylene foam.

Bonded Teflon®-Faced Silicone Liners White autoclavable open-top caps have a bonded Teflon-Faced Silicone Liner making them ideal for storage and retrieval of volatile solvents, sensitive compounds and corrosive chemicals. The liners consist of 0.055” of Silicone and 0.005” of...

Developed by the renowned DWK Life Sciences (Wheaton), this durable 13-425 cap is constructed from phenolic black material, offering optimal resistance to a wide range of chemicals. It is designed without a liner, making it perfect for a variety of applications in laboratories, research facilities,...

20-400 CAP, PP WHT, PTFE/FMD PE

The Sarstedt screw cap, with a durable construction, is an ideal accessory to have in any chemical laboratories, research facilities, manufacturing industries and pharmaceutical factories.

Phenolic Hole Caps are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. They also provide the most consistent adherence to close dimensional tolerances. Ideal for pharmaceutical applications. Septa sold separately.

Designed for standard screw thread vials. Available with or without septa. Easy on and easy off convenience with a twist of the cap that produces an evaporation proof seal. Larger opening provides a increased target area for needle penetration. Specifications: Size: 8mm Color: Blue Case Quantity:...

20-400 I-LOC CAP, PP RED

MicroLiter's 9mm autosampler screw-thread vial caps with open tops are available in multiple colors.

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...

Replacement snap caps for Class A serialized and certified volumetric flasks. Yellow polyethylene construction Fits Kimble® series 28000, 28008, 28010, 28010K and 28015 Fits flask size 200, 250, 500 mL Case of 6

Caps are designed to fit all different sizes of transport vials. All transport vials are 95kPa compliant. Available in a wide variety of colors. These caps can also be used on our 15 mL threaded centrifuge tubes.

Crafted by National Scientific, this 8mm silver crimp cap is a quality choice for securely sealing your laboratory bottles. It is engineered for a tight fit, ensuring the integrity and purity of your samples are maintained. Made from durable metal, this cap resists wear and tear while providing a...

20-410 STARLINE CAP, PP GRN

There is increasing evidence that exposure to PFAS (Per-and Polyfluoroalkyl) can adversely affect human health.  Per-and Polyfluoroalky substances do not break down, accumulating over time.  PFAS are widely used in materials such as PTFE.  Due to Government regulations that mandate...

11 MM SNAP CAP, PE CLR, TFE/SIL/TFE, STA

Ensure the utmost security and integrity of your samples with the National Scientific AVCS™ Screw Caps. This advanced closure system is designed to form a tight seal on 9mm bottles, offering superior protection in rigorous laboratory environments. Suitable for a wide range of applications, this...

Enable rapid identification by using Thermo Scientific™ Nalgene™ HDPE High Profile Closures with Color Coders for Micro Packaging Vials. Closures have no O-ring to fall out or contaminate contents and are free of toxic heavy metals. Permanently attached color coded inserts do not come in...