Premium 304 stainless steel construction ensures durability and resistance to erosion, making it ideal for vacuum applications. devised specifically for NW40 KF flanges, these chain clamps provide a secure and tight seal, essential for effective vacuum plumbing. Features a large wing screw for optimal force, guaranteeing reliable performance in high-pressure environments up to 2500 mbar. Hinged devise allows for easy one-handed installation in tight spaces, enhancing convenience and efficiency during setup. Compatible with elastomer seals and metal seals, these clamps are perfect for various vacuum setups, providing versatility in your applications., Manufacturer: ZNHENGEE