Polypropylene caps are an essential component in many laboratory environments and pharmaceutical production lines. These caps are designed to fit securely on screw-top glass vials, providing a reliable seal that prevents leakage or contamination from outside sources. With their superior sealing abilities, polypropylene caps provide optimal electrical insulation for sensitive materials and products. They also offer excellent low temperature resistance, making them perfect for cryopreservation and storage tasks. In addition, polypropylene caps are highly resilient to corrosion and chemical damage, extending the shelf life of sensitive materials. Their lightweight design allows for easy handling and transportation of laboratory supplies with minimal risk of breakage or contamination. With all these features combined, polypropylene caps are an essential component in any lab environment or pharmaceutical production line.