FAQs
What is the thread size of these caps?
The Qorpak Unlined Polypropylene Caps feature a 48-400 thread size, making them compatible with containers that have the same threading. This ensures a tight, secure fit, preventing leakage and maintaining the integrity of the stored contents.
Are these caps suitable for use with reactive chemicals?
These caps are made from polypropylene, which offers good chemical resistance. However, they are unlined and may not be suitable for highly reactive chemicals. It's recommended to assess polypropylene's compatibility with your specific chemicals before use.
How should these caps be stored when not in use?
To maintain their integrity, store the caps in a cool, dry place away from direct sunlight and heat sources. This will prevent potential degradation of the polypropylene material over time, ensuring it remains reliable for future use.
Can these caps be used for food and beverage storage?
Yes, these caps can be used for food and beverage storage, provided they are paired with compatible containers. However, users should ensure compliance with any relevant food safety regulations and consider the California Proposition 65 warning.
What is the warning associated with these caps?
These caps carry a California Proposition 65 warning, which indicates that they may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. Users should review this warning and take the necessary precautions.















