Image KF Long Weld Flange Vacuum Fitting Product Options Part Number Flange Size Material DVF-A10GD KF10 304 Stainless steel DVF-A16GD KF16 304 Stainless steel DVF-A25GD KF25 304 Stainless steel DVF-A40GD KF40 304 Stainless steel DVF-A50GD KF50 304 Stainless steel