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

Expired

Dimensions of Class 300 Full Face Gaskets (above 24 inches) as per ASME B16.21 to Suit ASME B16.47 Series A 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 26.00 662 38.25 972 28 1.75 34.50 876.3
28 28.00 713 40.75 1035 28 1.75 37.00 939.8
30 30.00 764 43.00 1092 28 1.88 39.25 997.0
32 32.00 815 45.25 1149 28 2.00 41.50 1054.1
34 34.00 866 47.50 1207 28 2.00 43.50 1104.9
36 36.00 917 50.00 1270 32 2.13 46.00 1168.4
38 38.00 968 46.00 1168 32 1.63 43.00 1092.2
40 40.00 1019 48.75 1238 32 1.75 45.50 1155.7
42 42.00 1070 50.75 1289 32 1.75 47.50 1206.5
44 44.00 1121 53.25 1353 32 1.88 49.75 1263.7
46 46.00 1172 55.75 1416 28 2.00 52.00 1320.8
48 48.00 1223 57.75 1467 32 2.00 54.00 1371.6
50 50.00 1274 60.25 1530 32 2.13 56.25 1428.8
52 52.00 1324 62.25 1581 32 2.13 58.25 1479.6
54 54.00 1375 65.25 1657 28 2.38 61.00 1549.4
56 56.00 1426 67.25 1708 28 2.38 63.00 1600.2
58 58.00 1477 69.25 1759 32 2.38 65.00 1651.0
60 60.00 1528 71.25 1810 32 2.38 67.00 1701.8
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