ANSI Polypropylene Backing Flange: 63mmBFPA063
Table D Backing Flange Stainless: 25mmBFS316D/E025
ANSI Polypropylene Backing Flange: 125mmBFPA125
Table D Backing Flange Stainless: 900mmBFS316D900
ANSI Polypropylene Backing Flange: 75mmBFPA075