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  • 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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Industry Standard Slip-On Flange 1-16
Unit of Measure
Items Industry Standard Slip-On Flange 1-16
26250SOIS
Industry Standard Class 250 Slip-On Flanges
Industry Standard Slip-On Flange 1-16
28250SOIS
Industry Standard Class 250 Slip-On Flanges
Industry Standard Slip-On Flange 1-16
30250SOIS
Industry Standard Class 250 Slip-On Flanges
Industry Standard Slip-On Flange 1-16
32250SOIS
Industry Standard Class 250 Slip-On Flanges
Industry Standard Slip-On Flange 1-16
34250SOIS
Industry Standard Class 250 Slip-On Flanges
Flange Type N/A Slip-On
Nominal Pipe Size N/A 26 N/A 28 N/A 30 N/A 32 N/A 34
Outside Diameter (O) N/A 38.25 in N/A 40.75 in N/A 43.00 in N/A 45.25 in N/A 47.50 in
Thickness (T) N/A 2.81 in N/A 2.94 in N/A 3.00 in N/A 3.12 in N/A 3.25 in
Raised Face Diameter (R) N/A 32.44 in N/A 34.94 in N/A 37.19 in N/A 39.44 in N/A 41.44 in
Length Thru Hub (Y) N/A 4.75 in N/A 5.00 in N/A 5.00 in N/A 5.13 in N/A 5.25 in
Base of Hub Diameter (X) N/A 30.50 in N/A 33.00 in N/A 35.25 in N/A 37.50 in N/A 39.50 in
Bore (B) N/A 26.25 in N/A 28.25 in N/A 30.25 in N/A 32.25 in N/A 34.25 in
Approximate Weight N/A 530 lb N/A 640 lb N/A 710 lb N/A 800 lb N/A 890 lb
Bolt Circle (C) N/A 34.50 in N/A 37.00 in N/A 39.25 in N/A 41.50 in N/A 43.50 in
Number of Holes N/A 28
Diameter of Bolt Holes N/A 1.88 in