Screw Cap, with Silicone Washer for Sample Tubes with External Threads (#'s: 6030-6059), Clear

These clear screw caps are specifically designed for use with sample tubes featuring external threads, ensuring secure storage and safe transport of biological materials. Manufactured from high-quality, non-toxic polypropylene (PP), the caps provide excellent durability, chemical resistance, and clarity for laboratory and clinical applications.

Each cap is equipped with a silicone washer that enhances sealing performance, delivering a reliable, leakproof closure even under varying temperature conditions. The matched polypropylene construction ensures consistent expansion between the cap and tube, further maintaining seal integrity.

Designed for convenience, the caps feature a long skirt and a super-fast thread design, allowing for quick and easy sealing or removal with just a single turn. These caps are ideal for maintaining sample integrity while minimizing the risk of contamination.

Suitable for research labs, diagnostic facilities, and sample handling environments, these screw caps provide dependable performance and ease of use.