Test Tube Caps

The Finneran Black Top Hat ™ closure cap assembled with PTFE/silicone septa, is used with chromatography vials. It is mainly used in research laboratories or in chemical industries. This cap is made of sturdy material which ensures long lasting usage and durability.

Biologix clear polypropylene non-sterile microtubes. Tubes are available in both conical bottom and self-standing conical bottom. Caps sold separately. Various sizes available.

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

The Agilent Technologies 2 mL blue screw cap is made from strong polypropylene material and comes with a bi-layer PTFE/silicone septa that ensures a water-tight and airtight seal. This product is only available to U.S. Domestic Customers. For research use only, not to be used in diagnostic...

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

Made from high-quality ethylene tetrafluoroethylene (ETFE), the 45 MM Pour Ring ensures precision and minimal spillage during liquid transfer procedures. Its robust construction provides excellent resistance to heat and chemical corrosion, making it a reliable choice for laboratories and industrial...

Cap Color:   White   Thread Finish:   8-425   Material:  Polypropylene (PP)   Cap Type:   Solid Top

38-430 STARLINE CAP, PP NAT

Reduce risk of contaminating contents with Thermo Scientific™ Nalgene™ PPCO High Profile Closures with Color Coders for Micro Packaging Vials. Polypropylene copolymer closures have no O-ring to fall out or contaminate contents and are offered with a variety of color coders. Features:...

PTFE-lined Closed Caps are replacement Caps for Thermo Scientific glass environmental sample bottles, jars, jugs and vials. The same high quality PTFE-lined caps used on our Thermo Scientific glass environmental sample containers. The PTFE liner is bonded to the cap so it won't fall out or become...

EZWaste® UN/DOT Filter Kit, VersaCap® S70, 4 ports for 1/8" OD Tubing, 4 port for 1/4" HB or 4 port for 3/8" HB and One Exhaust Filter, w/ Plugs.

Chem Snap Caps™ may be snapped on and off by hand which eliminates the need for metal crimping and decapping tools, thus reducing potential hazards due to sharp aluminum edges. Large opening provides greater target area for needle penetration. These liner-less Chem Snap Caps™ are...

Black Phenolic F217 & PTFE Lined Caps are known for providing the widest range of chemical compatibility. Foam backed PTFE liners resist attack from virtually all chemicals at room temperature and provides resilience for a tight seal with a low moisture transmission rate. F217 has a low density foam...

These polyethylene (PE) plug caps are designed in 11mm, 12mm, 16mm and 17mm sizes and are available in a selection of colors for sample identification.

Metal caps are very resistant to fracture from impact, and are great for industrial and food applications. Plastisol Lined Metal Caps and lids offer excellent resistance to mild acids as in food products, and are generally used on glass bottles and jars.

PTFE/Silicone Septas resist coring and provide great resealability. Ideal for laboratory environments, these PTFE/Silicone Septas are designed to offer a reliable seal for bottle closure systems. Their construction features a combination of PTFE and silicone materials, known for their chemical...

24-410 STARLINE CAP, PP GRN

These colorful snap-on closures are an effective way to recap blood drawing tubes, glass test tubes and plastic culture tubes. They are precision molded from low-density polyethylene (LDPE) and maintain a tight seal during centrifugation, agitation and refrigeration procedures. They are available in...

Bonded closures feature clear PTFE/Silicone liner bonded directly to the closure without the use of glue or adhesives. These bonded closures provide a cost effective, integrated, one-piece system that eliminates costly line fallout. Closures are available in both pre-slit and non-slit designs.

Ensure a secure and contamination-free seal on your vials with these Stoppers for Crimp Caps, N 20. Tailored to meet rigorous laboratory standards, these stoppers maintain the integrity of sensitive samples and substances during storage or transport. With their precision design, they offer reliable...

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

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

Used with Viton O-Rings and threaded outer joints for making grease-free, vacuum tight seals on 14/10 MINUM-WARE® glassware components. The 8-425 size is used on the sidearm of Hickman still head and MW-81 GC collection vial, while the 13-425 is used on the MW-56 two neck flask sidearm.

20-400 I-LOC CAP, PP WHT