This is a "tophat" blanking flange that came off a specialized piece of equipment, but unknown to us. It is stainless steel, clean and in great condition. This was sealed by an O-ring, so likely an ASA flange fitting, however the bolt hole pattern is different.
Vacuum Fitting Reducing Nipple - KF50 to KF25 - Adaptor Flange Centering Ring with Viton O-Ring - KF25 Flange Blank Cover - KF25 Hinged Clamp with Bolt Screw - For KF25 Parts were kitted and pulled from a stockroom, sold as used, but in excellent working condition
I googled the patent number and found the following info. The figures on the patent sketches looks slightly different than the piece. Patent number: US 3497806
I am selling 1 pair of KF40/NW40 Stainless Steel Blank Flange Caps. These were recently removed from working equipment and are in good clean condition. See photos for details.
YOU ARE BUYING ONE MAX PURE NEUMO V.N.E. EGMO TEG14RT-316L.5-PL ASME BPE FLANGE END BLANK BLIND 1" ID 20RAMAX OD 32RA. THIS IS USED SURPLUS FROM A SHUT DOWN SHOCKING TECHNOLOGIES FACILITY AND WHAT IS PICTURED IS WHAT YOU WILL RECEIVE.
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