Home > Vacuum Technology > KF Flanges > Flanges With Pipe Sockets For Welding Flanges with Pipe Sockets for Welding KF with Pipe Socket Short or Long Version Other lengths on request short (22mm); long (52mm-58mm) Material: Stainless steel 1.4301 Pressure range: 1×10-8 hPa with O-ring; 1×10-9 hPa with metal sealing Data Sheet