Dimension of Class 300 Full Face Gaskets - ASME B16.47 Series B Flanges

Expired

Dimensions of Class 300 Full Face Gaskets (above 24 inches) as per ASME B16.21 to Suit ASME B16.47 Series B Flanges.

Full Face Gasket Dimensions

Nominal
Pipe Size
(NPS)		 Inside Diameter
(ID)		 Outside Diameter
(OD)		 No. of Bolt
Holes		 Bolt Hole
Diameter
(inches)		 Bolt Circle Diameter
(BCD)
inches mm inches mm inches mm
26 26.00 660 34.13 867 32 1.38 31.63 803.4
28 28.00 711 36.25 921 36 1.38 33.75 857.3
30 30.00 762 39.00 991 36 1.50 36.25 920.8
32 32.00 813 41.50 1054 32 1.63 38.50 977.9
34 34.00 864 43.63 1108 36 1.63 40.63 1032.0
36 36.00 914 46.13 1172 32 1.75 42.88 1089.2
38 38.00 965 48.13 1223 36 1.75 44.88 1140.0
40 40.00 1016 50.13 1273 40 1.75 46.88 1190.8
42 42.00 1067 52.50 1334 36 1.88 49.00 1244.6
44 44.00 1118 54.50 1384 40 1.88 51.00 1295.4
46 46.00 1168 57.50 1461 36 2.00 53.75 1365.3
48 48.00 1219 59.50 1511 40 2.00 55.75 1416.1
50 50.00 1270 61.50 1562 44 2.00 57.75 1466.9
52 52.00 1321 63.50 1613 48 2.00 59.75 1517.7
54 54.00 1372 65.88 1673 48 2.00 62.13 1578.1
56 56.00 1422 69.50 1765 36 2.38 65.00 1651.0
58 58.00 1473 71.94 1827 40 2.38 67.44 1713.0
60 60.00 1524 73.94 1878 40 2.38 69.44 1763.8
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