- Ideal closure solution for applications involving repeated opening and closing of the container.
- A wide selection of sizes and liner configurations delivers a perfect fit with each container and chemical compatibility with your sample.
- Broad material and chemical compatibility across polypropylene, PBT, and PTFE-lined constructions for resistance to acids, bases, solvents, and elevated temperatures.
- Tubing connection caps and liquid distribution systems for safe and easy liquid transfers in and out of bottles.
- Color-coded cap options help labs organize media, identify contents at a glance, and reduce the risk of cross-contamination and cap mix-ups.
Screw Thread Caps
Frequently Asked Questions
A screw thread cap is used to securely seal laboratory bottles, preventing leaks and protecting stored liquids.
Screw thread caps create a tight seal through precision threading and, in some cases, additional sealing elements such as liners or lip seals. This reduces the risk of liquid leakage, vapor release, and environmental contamination. A properly fitted cap is essential for maintaining safe laboratory conditions and protecting both samples and users.
Selecting the right screw thread cap depends on several factors, including thread size (e.g., GL45), chemical compatibility, temperature resistance, and sealing requirements. For example, caps used with volatile solvents may require enhanced sealing features such as liners or lip seals, while high-temperature applications may require materials compatible with autoclaving.
Our thread caps are designed for repeated use, provided they are compatible with the application and properly maintained. Regular inspection for wear, deformation, or chemical damage is important. Caps used in critical applications should be cleaned according to laboratory protocols or replaced periodically to ensure consistent sealing performance.