Ring Flange Blind Disc Flange (No Bore/ID) Ring/Disc Weight Calculator This tool is designed to estimate custom flange weights based on external dims. Actual shipping weight may vary. Material Grade Carbon Steel (Standard) Stainless Steel 304/316 Low Alloy Steel Aluminum 6061 Brass Copper Titanium Gr 2 Hastelloy C-276 Inconel 625 Monel 400 Outer Diameter (OD) Inner Diameter (ID) Blind Flange ID cannot be larger than OD. Thickness Calculate Weight Estimated Weight 0.0 lbs *Calculator does not refresh automatically - must click 'Calculate' after changing any values. *Does not account for bolt holes.