Industry Standard Class 250 Blind Flanges

ProductsNominal Pipe SizeOutside Diameter (O)Thickness (T)Raised Face Diameter (R)Base of Hub Diameter (X)Approximate Weight (lbs)Bolt Circle (C)Number of HolesNumber of Holes
26250BDIS26 38.25 2.81 32.44 30.50 853 34.50 28 1.88
28250BDIS28 40.75 2.94 34.94 33.00 1022 37.00 28 1.88
30250BDIS30 43.00 3.00 37.19 35.25 1168 39.25 28 1.88
32250BDIS32 45.25 3.12 39.44 37.501353 41.50 28 1.88
34250BDIS34 47.50 3.25 41.44 39.50156043.50 28 1.88
36250BDIS36 50.00 3.38 43.69 41.50 1792 46.00 32 2.13
38250BDIS38 52.25 3.44 45.69 43.50 200348.00 32 2.13
40250BDIS40 54.50 3.5647.94 45.75 2223 50.25 36 2.13
42250BDIS42 57.00 3.69 50.44 47.75 2533 52.7536 2.13
44250BDIS44 59.25 3.75 52.69 49.75 2793 55.00 36 2.13
46250BDIS46 61.50 3.8854.94 51.75 3109 57.25 40 2.13
48250BDIS48 65.00 4.00 58.44 54.00 3599 60.75 40 2.13