Test Tube Caps

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

20-400 CAP, PP BLK, OPN, UNLINED

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 blood drawing...

38-430 STARLINE CAP, PP BLU

As part of the exceptional product range from National Scientific, this assembled vial kit is designed to meet the most rigorous scientific standards. The kit includes durable vials, expertly engineered to ensure the safe storage and transportation of sensitive materials. Each vial comes...

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

These dual position caps are produced from low density polyethylene (LDPE) and is ribbed for easy handling. The cap is specially designed to provide aerobic or anaerobic storage of culture samples. When snapped into the tube, the cap provides a leak-resistant seal. Note: Leave the cap in the loose...

Three pieced lined aluminum caps have unique metal inserts. Contents cannot be pilfered without removing cap or leaving evidence of puncture or insert. A metal tab wilt a rolled safety edge “perks up” to provide visual proof of tight seal. The caps remove quickly and easily in one piece. They fit...

Resistant to moisture vapor Chemical barrier Autoclavable Caps have excellent properties of resilience. The 14B white rubber lining material consists of homogeneous sulfur cured styrene-butadiene rubber. FDA Status complies with 21CFR 177.26, "Rubber articles intended for repeated use."

Sterile to 10 -6 SAL Non-cytotoxic, non-pyrogenic RNase/DNase Free Leakproof† when used with Nalgene Micro Packaging Vials

One piece tear-off style aluminum seal Allows for easy access to vials Fits aluminum seal finish: 13 Color: Natural 1000 seals per case

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