Test Tube Caps

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

Septa Caps fit VOA vials and jars with the matching finish. The same high quality septa caps used on our Thermo Scientific VOA Vials, septa bottles and septa jars. Processed to meet EPA Performance Based Specifications for Volatile Organic Analysis.

13-425 STARLINE CAP, PP RED

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

24-400 CAP, PHEN BLK, POLY-SEAL PE CONE

Ensure reliable seal integrity with our high-quality Microcentrifuge Tube Screw Caps. These caps provide a secure closure to protect, contain, and preserve contents, ideal for a wide range of laboratory applications. They are designed for easy use, facilitating quick tube capping and uncapping,...

Suitable for a wide range of applications Excellent moisture barrier Good for mild acids, alkalis, solvents, alcohols, oil and aqueous products Cap liner consists of one mil poly vinyl film bonded to one mil HDPE on a #30 white pulp paper backing. Superior to plain pulp paper because it provides...

Screw caps and pouring rings for use with GL threaded bottles. For steam autoclaving, we recommend PBT (polybutylene theraphthalate) caps with a PTFE liner, -45 to 180 degrees C rated. Polypropylene is only rated to 140 degrees C. 316L stainless steel cap is for use with stainless steel laboratory...

Made of Polypropylene T347AQX screw cap incorporates a pierceable septum made of chemically resistant PTFE on the outside and silicone on the inside, both components being stable over a broad range of temperatures. The septum also acts as a silicone o-ring for better sample protection. It is...

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...

High temperature resistivity range – shatter/crack resistant and ideal for boiling Easy ¾ turn to open and close Premium Grip Cap features molded TPE sealing rings; design ensures O-ring will never slip out of place. Striped TPE grips on cap edge enable secure handling under all...

MicroLiter vials are cleaned and packaged in a certified Class 10000 clean room according to a designed process, developed to eliminate chromatographic errors associated with vials Critical physical dimensions are fully tested, as well as chemical clea

28-410 STARLINE CAP, PP BLU

Long skirted screw caps with rubber liners. Autoclavable, black mineral-filled phenolic resin White rubber liners sealed into cap 14B white rubber (FDA classification) Deep skirt reduces risk of contaminatio

Save time and money with vial, cap, and septa kits that arrive conveniently packaged and preassembled.

Linerless closures are for use only with NALGENE narrow- and wide-mouth bottles and Erlenmeyer flasks Autoclavable Available in natural and amber

WHEATON® µLplate® Component Kits include one pack of 100 of µLplate Inserts and one pack of Snap Caps. Carrier µLplate sold separately. A comprehensive line of 96-well microplates for chromatography, the Plate Sampling System™ uses closures familiar to those who work...

20-400 CAP, PP YLW, OPN, UNLINED

MicroLiter® BlueMAG™ caps uniquely designed for automated GC, GC-MS and LC-MS chromatography magnetic sample transport systems. A perfect fit for headspace sampling techniques to 130°C. Offering an innovative built-in steel overlay on the outside of the polypropylene screw closure. The...

White Unlined Polypropylene Caps are known for good impact strength, cost effectiveness, and pliability. Unlined polypropylene closures are also available in black. These caps are autoclavable and are suitable for many dry products.

Stoppers with Wheaton E-Z Seals™ have a larger target diameter that makes them ideal for use with the larger-opening E-Z Vials™. These seals are ideal for filling or retrieving contents with a syringe and as closures for many instrumentation applications. The 8 mm seal is designed for...

Pre-assembled closure and septa minimize contamination from handling. Offering reliable sealing solutions for laboratory bottles, the GPI 8-425, Preassembled Closures and Septa ensures secure containment of substances. Preassembled for convenience, these closures minimize the potential for...