Secure your samples with confidence using our 18mm magnetic precision screw metal cap, featuring a robust blue PTFE liner at 1.5mm thickness. Engineered for durability and superior chemical resistance, this cap is ideal for laboratories demanding precision and reliability. The magnetic feature enhances usability, allowing for smooth operation and a perfect fit. Perfect for applications requiring tight seals and protection from contamination, this cap combines functionality with the strength of high-quality metal construction. Trust this cap to keep your samples safe and your workflow efficient.