Description: These KF-25 Metal Hose Bellows Flex Coupling vacuum fittings follow ISO-KF standards and have a flange size of NW-25. They are unsheathed and butt welded. Commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. Features: 1. Soft, flexible, easy to bend, vibration absorbing 2. It has already passed the helium leakage test Specifications: Model: KF25 Materials: 304 Stainless Steel Application: Vacuum Equipment
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