Gasket Dimensions for Flat Ring and Full Face Applications
ASME B16.47 Series A Class 150 (Previously MSS SP44)
Nominal Bore |
Gasket ID |
IBC Gasket OD |
Full Face |
Nominal Bore |
Gasket OD |
Diameter of Bolt Holes |
Bolt P.C.D. |
Number of Bolt Holes |
Inches |
mm |
Inches |
mm |
Inches |
mm |
Inches |
mm |
Inches |
mm |
22 |
22 |
558.8 |
26 |
660.4 |
29 1/2 |
749.3 |
1 3/8 |
34.9 |
27 1/4 |
692.2 |
20 |
22 |
26 |
26 |
660.4 |
30 1/2 |
774.7 |
34 1/4 |
870.0 |
1 3/8 |
34.9 |
31 3/4 |
806.5 |
24 |
26 |
28 |
28 |
711.2 |
32 3/4 |
831.9 |
36 1/2 |
927.1 |
1 3/8 |
34.9 |
34 |
863.6 |
28 |
28 |
30 |
30 |
762.0 |
34 3/4 |
882.7 |
38 3/4 |
984.3 |
1 3/8 |
34.9 |
36 |
914.4 |
28 |
30 |
32 |
32 |
812.8 |
37 |
939.8 |
41 3/4 |
1060.5 |
1 5/8 |
41.3 |
38 1/2 |
977.9 |
28 |
32 |
34 |
34 |
863.6 |
39 |
990.6 |
43 3/4 |
1111.3 |
1 5/8 |
41.3 |
40 1/2 |
1028.7 |
32 |
34 |
36 |
36 |
914.4 |
41 1/4 |
1047.8 |
46 |
1168.4 |
1 5/8 |
41.3 |
42 3/4 |
1085.9 |
32 |
36 |
38 |
38 |
965.2 |
43 3/4 |
1111.3 |
48 3/4 |
1238.3 |
1 5/8 |
41.3 |
45 1/4 |
1149.4 |
32 |
38 |
40 |
40 |
1016.0 |
45 3/4 |
1162.1 |
50 3/4 |
1289.1 |
1 5/8 |
41.3 |
47 1/4 |
1200.2 |
36 |
40 |
42 |
42 |
1066.8 |
48 |
1219.2 |
53 |
1346.2 |
1 5/8 |
41.3 |
49 1/2 |
1257.3 |
36 |
42 |
44 |
44 |
1117.6 |
50 1/4 |
1276.4 |
55 1/4 |
1403.4 |
1 5/8 |
41.3 |
51 3/4 |
1314.5 |
40 |
44 |
46 |
46 |
1168.4 |
52 1/4 |
1327.2 |
57 1/4 |
1454.2 |
1 5/8 |
41.3 |
53 3/4 |
1365.3 |
40 |
46 |
48 |
48 |
1219.2 |
54 1/2 |
1384.3 |
59 1/2 |
1511.3 |
1 5/8 |
41.3 |
56 |
1422.4 |
44 |
48 |
50 |
50 |
1270.0 |
56 1/2 |
1435.1 |
61 3/4 |
1568.5 |
1 7/8 |
47.6 |
58 1/4 |
1479.6 |
44 |
50 |
52 |
52 |
1320.8 |
58 3/4 |
1492.3 |
64 |
1625.6 |
1 7/8 |
47.6 |
60 1/2 |
1536.7 |
44 |
52 |
54 |
54 |
1371.6 |
61 |
1549.4 |
66 1/4 |
1682.8 |
1 7/8 |
47.6 |
62 3/4 |
1593.9 |
44 |
54 |
56 |
56 |
1422.4 |
63 1/4 |
1606.6 |
68 3/4 |
1746.3 |
1 7/8 |
47.6 |
65 |
1651.0 |
48 |
56 |
58 |
58 |
1473.2 |
65 1/2 |
1663.7 |
71 |
1803.4 |
1 7/8 |
47.6 |
67 1/4 |
1708.2 |
48 |
58 |
60 |
60 |
1524.0 |
67 1/2 |
1714.5 |
73 |
1854.2 |
1 7/8 |
47.6 |
69 1/4 |
1759.0 |
52 |
60 |