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

Nominal Pipe Size

Outside Diameter (O)

Thickness (T)

Overall Thickness (Y)

Hub Diameter (X)

Inside Diameter (B)

Approximate Weight (lbs)

Number of Bolt Holes

Diameter of Bolt Holes

Diameter of Bolt Circle (C)

26125SOIS N/A 26 N/A 34.25 N/A 2.00 N/A 3.38 N/A 28.50 N/A 26.25 N/A 235 N/A 24 N/A 1.38 N/A 31.75
28125SOIS N/A 28 N/A 36.50 N/A 2.06 N/A 3.44 N/A 30.75 N/A 28.25 N/A 270 N/A 28 N/A 1.38 N/A 34.00
30125SOIS N/A 30 N/A 38.75 N/A 2.13 N/A 3.50 N/A 32.75 N/A 30.25 N/A 305 N/A 28 N/A 1.38 N/A 36.00
32125SOIS N/A 32 N/A 41.75 N/A 2.25 N/A 3.63 N/A 35.00 N/A 32.25 N/A 375 N/A 28 N/A 1.63 N/A 38.50
34125SOIS N/A 34 N/A 43.75 N/A 2.31 N/A 3.69 N/A 37.00 N/A 34.25 N/A 400 N/A 32 N/A 1.63 N/A 40.50
36125SOIS N/A 36 N/A 46.00 N/A 2.38 N/A 3.75 N/A 39.25 N/A 36.25 N/A 450 N/A 32 N/A 1.63 N/A 42.75
38125SOIS N/A 38 N/A 48.75 N/A 2.38 N/A 3.75 N/A 41.75 N/A 38.25 N/A 530 N/A 32 N/A 1.63 N/A 45.25
40125SOIS N/A 40 N/A 50.75 N/A 2.50 N/A 3.88 N/A 43.75 N/A 40.25 N/A 570 N/A 36 N/A 1.63 N/A 47.25
42125SOIS N/A 42 N/A 53.00 N/A 2.63 N/A 4.00 N/A 46.00 N/A 42.25 N/A 650 N/A 36 N/A 1.63 N/A 49.50
44125SOIS N/A 44 N/A 55.25 N/A 2.63 N/A 4.00 N/A 48.00 N/A 44.25 N/A 690 N/A 40 N/A 1.63 N/A 51.75
46125SOIS N/A 46 N/A 57.25 N/A 2.69 N/A 4.06 N/A 50.00 N/A 46.25 N/A 730 N/A 40 N/A 1.63 N/A 53.75
48125SOIS N/A 48 N/A 59.50 N/A 2.75 N/A 4.13 N/A 52.25 N/A 48.25 N/A 800 N/A 44 N/A 1.63 N/A 56.00
50125SOIS N/A 50 N/A 61.75 N/A 2.75 N/A 4.13 N/A 54.25 N/A 50.25 N/A 830 N/A 44 N/A 1.88 N/A 58.25
52125SOIS N/A 52 N/A 64.00 N/A 2.88 N/A 4.25 N/A 56.50 N/A 52.25 N/A 920 N/A 44 N/A 1.88 N/A 60.50
54125SOIS N/A 54 N/A 66.25 N/A 3.00 N/A 4.38 N/A 58.75 N/A 54.25 N/A 1025 N/A 44 N/A 1.88 N/A 62.75
60125SOIS N/A 60 N/A 73.00 N/A 3.13 N/A 4.50 N/A 65.25 N/A 60.25 N/A 1250 N/A 52 N/A 1.88 N/A 69.25
66125SOIS N/A 66 N/A 80.00 N/A 3.38 N/A 4.88 N/A 71.50 N/A 66.25 N/A 1625 N/A 52 N/A 1.88 N/A 76.00
72125SOIS N/A 72 N/A 86.50 N/A 3.50 N/A 5.00 N/A 78.50 N/A 72.25 N/A 1925 N/A 60 N/A 1.88 N/A 82.50
78125SOIS N/A 78 N/A 93.00 N/A 3.88 N/A 5.38 N/A 84.50 N/A 78.25 N/A 2525 N/A 64 N/A 2.13 N/A 89.00
84125SOIS N/A 84 N/A 99.75 N/A 3.88 N/A 5.38 N/A 90.50 N/A 84.25 N/A 2600 N/A 64 N/A 2.13 N/A 95.50
90125SOIS N/A 90 N/A 106.50 N/A 4.25 N/A 5.75 N/A 96.75 N/A 90.25 N/A 3150 N/A 68 N/A 2.38 N/A 102.00
96125SOIS N/A 96 N/A 113.25 N/A 4.25 N/A 5.75 N/A 102.75 N/A 96.25 N/A 3275 N/A 68 N/A 2.38 N/A 108.50
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