Image KF Blank Flange Vacuum Fitting Product Options Part Number Flange Size Material DVF-A10GB KF10 304 Stainless steel DVF-A16GB KF16 304 Stainless steel DVF-A25GB KF25 304 Stainless steel DVF-A40GB KF40 304 Stainless steel DVF-A50GB KF50 304 Stainless steel