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  • All dimensions are in inches.
  • These flanges will be supplied with a 1/16" raised face unless otherwise specified.
  • Flat face option available.

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Industry Standard Blind Flange
Unit of Measure
Items Industry Standard Blind Flange
26075BDISMW
Industry Standard Class 75 Matching Blind Flanges (Welding Neck)
Industry Standard Blind Flange
28075BDISMW
Industry Standard Class 75 Matching Blind Flanges (Welding Neck)
Industry Standard Blind Flange
30075BDISMW
Industry Standard Class 75 Matching Blind Flanges (Welding Neck)
Industry Standard Blind Flange
32075BDISMW
Industry Standard Class 75 Matching Blind Flanges (Welding Neck)
Industry Standard Blind Flange
34075BDISMW
Industry Standard Class 75 Matching Blind Flanges (Welding Neck)
Flange Type N/A Blind
Nominal Pipe Size N/A 26 N/A 28 N/A 30 N/A 32 N/A 34
Outside Diameter (O) N/A 31.50 in N/A 33.50 in N/A 35.50 in N/A 38.25 in N/A 40.25 in
Thickness (T) N/A 1.25 in N/A 1.25 in N/A 1.38 in N/A 1.50 in N/A 1.50 in
Raised Face Diameter (R) N/A 28.63 in N/A 30.63 in N/A 32.63 in N/A 35.00 in N/A 37.00 in
Approximate Weight N/A 265 lb N/A 300 lb N/A 370 lb N/A 470 lb N/A 520 lb
Bolt Circle (C) N/A 29.63 in N/A 31.63 in N/A 33.63 in N/A 36.13 in N/A 38.13 in
Number of Holes N/A 32 N/A 36 N/A 36 N/A 36 N/A 40
Diameter of Holes N/A 1.00 in N/A 1.00 in N/A 1.00 in N/A 1.13 in N/A 1.13 in