These popular caps fit plain end culture tubes and flasks with DeLong style necks or ports. The caps are molded from durable, autoclavable polypropylene (PP). They are available in a full range of five sizes and five colors for easy sample identification and organization. Recommended tube diameter…

Phenolic Pulp/Vinyl Lined Caps are perfect for general use. The liner is made of a vinyl coating applied to high density polyethylene coated paper and then it is laminated to pulpboard. This general purpose liner is commonly used for food, beverage, medical and chemical applications packed at less…

Septa for Screw Thread Closures

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

White polypropylene closure, Unlined

These autoclavable caps are designed to ensure the ultimate in product safety. The liners are white styrene-butadiene faced with Teflon.

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…

Falcon® polystyrene Plug Seal screw caps for 50mL centrifuge tubes are sterile. The caps are sold 50 per pack and 1,000 per case.

Quick, convenient, and minimize contamination 20mm Crimp seals with prefitted septa for headspace vials Seals with pre-inserted septa are convenient and minimize contamination due to handling Use magnetic seals with CTC/Leap* Technologies, Gerstel* and other magnetic transport autosamplers…

Solid virgin PTFE liners can be manually inserted into closure and maintains a snug friction fit. PTFE liners are also available in other sizes and thicknesses.

Globe Scientific CT™ flange plug caps have extremely high tolerances and are specifically designed for use with CapTrack™. These caps provide superior leak resistance in all tubes processed by CapTrack™ which allows for the utmost confidence in sample integrity during…

Multi-function Transfer Cap Unlike the bi-directional liquid transfer cap, the multi-function transfer cap can be directly placed in an incubator for culture after the liquid transfer is completed. It can reach a large air flux. The sampling part is composed of a sampling nozzle and a one-way…

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.

Gasket for Filling/Venting Closure for Nalge # 2160-0830

Polyethylene stopper caps to fit a variety of general purpose test tubes

Green Thermoset F217 & PTFE Lined Caps are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. The color green easily identifies the PTFE liner system. Foam backed PTFE liners resist attack from virtually all chemicals…

Magnetic Threaded Screw Caps are offered with a selection of liner materials.  For best results, it is very important the headspace vial and the closure form a tight seal.

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.

Premium pour caps & ring Compound formulated without colour dye to avoid risk of leaching. Service temperature limit from –196°C to +200°C. Very high chemical resistance. High leak tightness through use of PTFE coated silicone seal. A matching TpCh260 pouring ring is also…

Fits most 13mm glass tubes Fits most 13mm glass evacuated blood collection tubes Fits most 12mm plastic culture tubes Thumb tab for easy removal Polyethylene (LDPE) 1000 caps per sealed bag Assorted colors available These colorful snap on closures are an effective way to recap 13mm…

Tefon®-faced (14B) rubber liners Autoclavable caps are designed to ensure the ultimate in product safety. The liners are made of a nontoxic white styrene-butadiene rubber and are faced with Teflon® which offers excellent chemical resistance. They are available in convenient lab pack quantities…

Fit Thermo Scientific™ Nalgene™ Narrow Mouth and Wide Mouth Bottle Replacement Closures onto Nalgene narrow mouth and wide mouth bottles.

These pierceable caps are great for recapping vacuum blood tubes and test tubes. They are produced from santoprene (a rubberized material) and can easily be pierced with a syringe.

Replacement polypropylene open top closures have a bonded-in 0.045” thick septa except for 1709B03, which is a 24-414 open top closure without septa. Choose an I-CHEM® 0.125” thick, 22 mm, PTFE silicone replacement septum to complete the closure system. Thin septa are also available.

Thermo Scientific™ Nalgene Closures for Large Carboys and Bottles are made of white polypropylene (PP). Screw Closures are designed to fit only Nalgene Carboys and Bottles to provide a guaranteed leakproof system. TPE Sealing Gasket for Nalge # 2162-0530

Fits most brands of 12mm tubes Polyethylene (PE) Available in sorted colors

Screw cap for 5.0 ml MacrewTube™ Microcentrifuge tubes. Polypropylene. RNase, DNase, Pyrogen and DNA free. Autoclavable. Temp range +121 °C to -196 °C.