Precision 304 stainless steel vacuum welding joint, featuring a KF flange on one end and an open pipe end on the other, designed to connect KF vacuum components to a section of tubing via welding. Constructed with corrosion-resistant 304 stainless steel and finished with an internal and external mirror polish, minimizing outgassing and ensuring compatibility with high and ultra-high vacuum applications. Available in multiple standard KF flange sizes (KF16, KF25, KF40, KF50) and various practical lengths (20mm, 30mm, 40mm, 50mm). You must specify both the KF flange size​ and the desired joint length. Machined with neat, burr-free edges to ensure a reliable vacuum seal when used with a compatible KF O-ring on the flange side and properly welded on the pipe side. A fundamental building block for constructing or repairing vacuum pump stations, chamber ports, and custom vacuum manifolds, providing a robust and permanent connection point., Manufacturer: SYLALE