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Industry Standard Class 125-150 Blind Flange
Unit of Measure
1 2 

Item #

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Approximate Weight

Number of Bolt Holes

Diameter of Bolt Holes

Diameter of Bolt Circle (C)

52125BDISLW N/A 52 N/A 64.00 in N/A 1.38 in N/A 1205 lb N/A 44 N/A 1.88 in N/A 60.50 in
54125BDISLW N/A 54 N/A 66.25 in N/A 1.38 in N/A 1300 lb N/A 44 N/A 1.88 in N/A 62.75 in
60125BDISLW N/A 60 N/A 73.00 in N/A 1.50 in N/A 1725 lb N/A 52 N/A 1.88 in N/A 69.25 in
66125BDISLW N/A 66 N/A 80.00 in N/A 1.50 in N/A 2075 lb N/A 52 N/A 1.88 in N/A 76.00 in
72125BDISLW N/A 72 N/A 86.50 in N/A 1.50 in N/A 3280 lb N/A 60 N/A 1.88 in N/A 82.50 in
78125BDISLW N/A 78 N/A 93.00 in N/A 1.75 in N/A 3280 lb N/A 64 N/A 2.13 in N/A 89.00 in
84125BDISLW N/A 84 N/A 99.75 in N/A 1.75 in N/A 3761 lb N/A 64 N/A 2.13 in N/A 95.50 in
90125BDISLW N/A 90 N/A 106.50 in N/A 2.00 in N/A 4866 lb N/A 68 N/A 2.38 in N/A 102.00 in
96125BDISLW N/A 96 N/A 113.25 in N/A 2.00 in N/A 5527 lb N/A 68 N/A 2.38 in N/A 108.50 in
Unit of Measure
1 2