ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
150# Flanges
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
3.5
4
5
6
8
10
12
14
16
18
20
24
Series A
Pipe Size
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.00
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Ring
Gasket
O.D.
1.88
2.25
2.62
3.00
3.38
4.12
4.88
5.38
6.38
6.88
7.75
8.75
11.00
13.38
16.13
17.75
20.25
21.62
23.88
28.25
Gasket
I.D.
26.00
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
56.00
58.00
60.00
Ring
Gasket
O.D.
30.50
32.75
34.75
37.00
39.00
41.25
43.75
45.75
48.00
50.25
52.25
54.50
56.50
58.75
61.00
63.25
65.50
67.50
Gasket
O.D.
3.50
3.88
4.25
4.63
5.00
6.00
7.00
7.50
8.50
9.00
10.00
11.00
13.50
16.00
19.00
21.00
23.50
25.00
27.50
32.00
Full Face
Bolt
Bolt Hole Bolt Hole
Circle
Qty.
Dia.
2.38
4
0.63
2.75
4
0.63
3.13
4
0.63
3.50
4
0.63
3.88
4
0.63
4.75
4
0.75
5.50
4
0.75
6.00
4
0.75
7.00
8
0.75
7.50
8
0.75
8.50
8
0.88
9.50
8
0.88
11.75
8
0.88
14.25
12
1.00
17.00
12
1.00
18.75
12
1.13
21.25
16
1.13
22.75
16
1.25
25.00
20
1.25
29.50
20
1.38
Gasket
O.D.
34.25
36.50
38.75
41.75
43.75
46.00
48.75
50.75
53.00
55.25
57.25
59.50
61.75
64.00
66.25
68.75
71.00
73.00
Full Face
Bolt
Bolt Hole Bolt Hole
Circle
Qty.
Dia.
31.75
24
1.38
34.00
28
1.38
36.00
28
1.38
38.50
28
1.63
40.50
32
1.63
42.75
32
1.63
45.25
32
1.63
47.25
36
1.63
49.50
36
1.63
51.75
40
1.63
53.75
40
1.63
56.00
44
1.63
58.25
44
1.88
60.50
44
1.88
62.75
44
1.88
65.00
48
1.88
67.25
48
1.88
69.25
52
1.88
ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
300# Flanges
Ring
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
3.5
4
5
6
8
10
12
14
16
18
20
24
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.00
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Series A
Pipe Size
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Gasket
O.D.
2.12
2.62
2.88
3.25
3.75
4.38
5.12
5.88
6.50
7.12
8.50
9.88
12.12
14.25
16.62
19.12
21.25
23.50
25.75
30.50
Full Face
Gasket
O.D.
3.75
4.62
4.88
5.25
6.12
6.50
7.50
8.25
9.00
10.00
11.00
12.50
15.00
17.50
20.50
23.00
25.50
28.00
30.50
36.00
Ring
Gasket
I.D.
26.00
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
56.00
58.00
60.00
Gasket
O.D.
32.88
35.38
37.50
39.62
41.62
44.00
41.50
43.88
45.88
48.00
50.12
52.12
54.25
56.25
58.75
60.75
62.75
64.75
Bolt
Circle
2.62
3.25
3.50
3.88
4.50
5.00
5.88
6.62
7.25
7.88
9.25
10.62
13.00
15.25
17.75
20.25
22.50
24.75
27.00
32.00
Bolt Hole Bolt Hole
Qty.
Dia.
4
0.63
4
0.75
4
0.75
4
0.75
4
0.88
8
0.75
8
0.88
8
0.88
8
0.88
8
0.88
8
0.88
12
0.88
12
1.00
16
1.12
16
1.25
20
1.25
20
1.38
24
1.38
24
1.38
24
1.62
Full Face
Gasket
O.D.
38.25
40.75
43.00
45.25
47.50
50.00
46.00
48.75
50.75
53.25
55.75
57.75
60.25
62.25
65.25
67.25
69.25
71.25
Bolt
Circle
34.50
37.00
39.25
41.50
43.50
46.00
43.00
45.50
47.50
49.75
52.00
54.00
56.25
58.25
61.00
63.00
65.00
67.00
Bolt Hole Bolt Hole
Qty.
Dia.
28
1.75
28
1.75
28
1.88
28
2.00
28
2.00
32
2.12
32
1.62
32
1.75
32
1.75
32
1.88
28
2.00
32
2.00
32
2.12
32
2.12
28
2.38
28
2.38
32
2.38
32
2.38
ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
400# Flanges
PLEASE CHECK SERVICE CONDITIONS
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
3.5
4
5
6
8
10
12
14
16
18
20
24
Series A
Pipe Size
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.00
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Ring
Gasket
O.D.
2.12
2.62
2.88
3.25
3.75
4.38
5.12
5.88
6.38
7.00
8.38
9.75
12.00
14.12
16.50
19.00
21.12
23.38
25.50
30.25
Gasket
I.D.
26.00
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
56.00
58.00
60.00
Ring
Gasket
O.D.
32.75
35.12
37.25
39.50
41.50
44.00
42.26
44.58
46.38
48.50
50.75
53.00
55.25
57.26
59.75
61.75
63.75
66.25
Gasket
O.D.
3.75
4.62
4.88
5.25
6.12
6.50
7.50
8.25
9.00
10.00
11.00
12.50
15.00
17.50
20.50
23.00
25.50
28.00
30.50
36.00
Full Face
Bolt
Bolt Hole Bolt Hole
Circle
Qty.
Dia.
2.62
4
0.63
3.25
4
0.75
3.50
4
0.75
3.88
4
0.75
4.50
4
0.88
5.00
8
0.75
5.88
8
0.88
6.62
8
0.88
7.25
8
1.00
7.88
8
1.00
9.25
8
1.00
10.62
12
1.00
13.00
12
1.12
15.25
16
1.25
17.75
16
1.38
20.25
20
1.38
22.50
20
1.50
24.75
24
1.50
27.00
24
1.62
32.00
24
1.88
Gasket
O.D.
38.25
40.75
43.00
45.25
47.50
50.00
47.50
50.00
52.00
54.50
56.75
59.50
61.75
63.75
67.00
69.00
71.00
74.25
Full Face
Bolt
Bolt Hole Bolt Hole
Circle
Qty.
Dia.
34.50
28
1.88
37.00
28
2.00
39.25
28
2.12
41.50
28
2.12
43.50
28
2.12
46.00
32
2.12
44.00
32
1.88
46.25
32
2.00
48.25
32
2.00
50.50
32
2.12
52.75
36
2.12
55.25
28
2.38
57.50
32
2.38
59.50
32
2.38
62.25
28
2.62
64.25
32
2.62
66.25
32
2.62
69.00
32
2.88
ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
600# Flanges
PLEASE CHECK SERVICE CONDITIONS
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
3.5
4
5
6
8
10
12
14
16
18
20
24
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.00
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Series A
Pipe Size
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Ring
Gasket
O.D.
2.12
2.62
2.88
3.25
3.75
4.38
5.12
5.88
6.38
7.62
9.50
10.50
12.62
15.75
18.00
19.38
22.25
24.12
26.88
31.12
Gasket
O.D.
3.75
4.62
4.88
5.25
6.12
6.50
7.50
8.25
9.00
10.75
13.00
14.00
16.50
20.00
22.00
23.75
27.00
29.25
32.00
37.00
Ring
Gasket
I.D.
26.00
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
56.00
58.00
60.00
Gasket
O.D.
34.12
36.00
38.25
40.25
42.25
44.50
43.50
45.50
48.00
50.00
52.26
54.75
57.00
59.00
61.25
63.50
65.50
67.75
Full Face
Bolt
Bolt Hole Bolt Hole
Circle
Qty.
Dia.
2.62
4
0.63
3.25
4
0.75
3.50
4
0.75
3.88
4
0.75
4.50
4
0.88
5.00
8
0.75
5.88
8
0.88
6.62
8
0.88
7.25
8
1.00
8.50
8
1.00
10.50
8
1.12
11.50
12
1.12
13.75
12
1.25
17.00
16
1.38
19.25
20
1.38
20.75
20
1.50
23.75
20
1.62
25.75
20
1.75
28.50
24
1.75
33.00
24
2.00
Full Face
Gasket
O.D.
40.00
42.25
44.50
47.00
49.00
51.75
50.00
52.00
55.25
57.25
59.50
62.75
65.75
67.75
70.00
73.00
75.00
78.50
Bolt
Circle
36.00
38.00
40.25
42.50
44.50
47.00
45.75
47.75
50.50
52.50
54.75
57.50
60.00
62.00
64.25
66.75
68.75
71.75
Bolt Hole Bolt Hole
Qty.
Dia.
28
2.00
28
2.12
28
2.12
28
2.38
28
2.38
28
2.62
28
2.38
32
2.38
28
2.62
32
2.62
32
2.62
32
2.88
28
3.12
32
3.12
32
3.12
32
3.38
32
3.38
28
3.62
ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
900# Flanges
PLEASE CHECK SERVICE CONDITIONS.
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
4
5
6
8
10
12
14
16
18
20
24
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Series A
Pipe Size
26
28
30
32
34
36
38
40
42
44
46
48
Ring
Gasket
O.D.
2.50
2.75
3.13
3.51
3.89
5.63
6.51
6.88
8.25
10.01
11.13
13.88
17.13
20.51
22.75
25.26
27.75
29.76
35.51
Gasket
O.D.
4.75
5.12
5.88
6.25
7.00
8.50
9.62
10.50
12.25
14.75
15.50
19.00
23.00
26.50
29.50
32.50
36.00
38.75
46.00
Ring
Gasket
I.D.
26.00
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
48.00
Gasket
O.D.
34.75
37.26
39.76
42.25
44.76
47.26
47.26
49.26
51.26
53.87
56.51
58.51
Full Face
Bolt
Bolt Hole Bolt Hole
Circle
Qty.
Dia.
3.25
4
0.88
3.50
4
0.88
4.00
4
1.00
4.38
4
1.00
4.88
4
1.12
6.50
8
1.00
7.50
8
1.12
8.00
8
1.25
9.50
8
1.38
11.50
8
1.62
12.50
12
1.50
15.50
12
1.75
19.00
12
2.00
22.50
16
2.12
25.00
16
2.38
27.75
16
2.62
30.50
16
2.88
32.75
16
3.12
39.00
16
3.62
Full Face
Gasket
O.D.
42.75
46.00
48.50
51.75
55.00
57.50
57.50
59.50
61.50
64.88
68.25
70.25
Bolt
Circle
37.50
40.25
42.75
45.50
48.25
50.75
50.75
52.75
54.75
57.62
60.50
62.50
Bolt Hole Bolt Hole
Qty.
Dia.
20
2.88
20
3.12
20
3.12
20
3.38
20
3.62
20
3.62
20
3.62
24
3.62
24
3.62
24
3.88
24
4.12
24
4.12
ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
1500# Flanges
PLEASE CHECK SERVICE CONDITIONS.
Ring
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
4
5
6
8
10
12
14
16
18
20
24
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Gasket
O.D.
2.50
2.75
3.13
3.51
3.89
5.63
6.51
7.13
8.13
9.75
11.38
14.13
17.13
19.63
20.51
22.63
25.13
27.51
33.01
Full Face
Gasket
O.D.
4.75
5.12
5.88
6.25
7.00
8.50
9.62
9.50
12.25
14.75
15.50
19.00
23.00
26.50
29.50
32.50
36.00
38.75
46.00
Bolt
Circle
3.25
3.50
4.00
4.38
4.88
6.50
7.50
8.00
9.25
11.00
12.50
15.50
18.50
21.00
22.00
24.25
27.00
29.50
35.50
Bolt Hole Bolt Hole
Qty.
Dia.
4
0.88
4
0.88
4
1.00
4
1.00
4
1.12
8
1.00
8
1.12
8
1.00
8
1.25
8
1.38
12
1.25
12
1.50
16
1.50
20
1.50
20
1.62
20
1.75
20
2.00
20
2.12
20
2.62
ASME B16.21 & B16.47 Gasket Dimensions for ASME B16.5
2500# Flanges
PLEASE CHECK SERVICE CONDITIONS.
Ring
Pipe Size
0.5
0.75
1
1.25
1.5
2
2.5
3
4
5
6
8
10
12
Gasket
I.D.
0.84
1.06
1.31
1.66
1.91
2.38
2.88
3.50
4.50
5.56
6.62
8.62
10.75
12.75
Gasket
O.D.
2.75
3.00
3.38
4.13
4.63
5.76
6.63
7.75
9.26
11.00
12.51
15.26
18.76
21.63
Full Face
Gasket
O.D.
5.25
5.50
6.25
7.25
8.00
9.25
10.50
12.00
14.00
16.50
19.00
21.75
26.50
30.00
Bolt
Circle
3.50
3.75
4.25
5.12
5.75
6.75
7.75
9.00
10.75
12.75
14.50
17.25
21.25
24.38
Bolt Hole Bolt Hole
Qty.
Dia.
4
0.88
4
0.88
4
1.00
4
1.12
4
1.25
8
1.12
8
1.25
8
1.38
8
1.62
8
1.88
8
2.12
12
2.12
12
2.62
12
2.88