Gasket - FF, ANSI Cl 250/300, ASME B16.21 (in)
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Gasket Datasheets
Gasket - FF, ANSI Cl 250/300, ASME B16.21 (in)
Gasket - Full Face, ANSI Cl 250/300, ASME B16.21 (in)
Dimensions to ASME B16.21 - Nonmetallic Flat Gaskets for Pipe Flanges
Pipe Size (NPS)
Gasket Inside Diameter
Gasket Outside Diameter
Number of Bolt Holes
Diameter of Bolt Holes
Bolt Circle Diameter
1/2
-
-
-
-
-
3/4
-
-
-
-
-
1
1 5/16
4 7/8
4
3/4
3 1/2
1 1/4
1 21/32
5 1/4
4
3/4
3 7/8
1 1/2
1 29/32
6 1/8
4
7/8
4 1/2
2
2 3/8
6 1/2
8
3/4
5
2 1/2
2 7/8
7 1/2
8
7/8
5 7/8
3
3 1/2
8 1/4
8
7/8
6 5/8
3 1/2
4
9
8
7/8
7 1/4
4
4 1/2
10
8
7/8
7 7/8
5
5 9/16
11
8
7/8
9 1/4
6
6 5/8
12 1/2
12
7/8
10 5/8
8
8 5/8
15
12
1
13
10
10 3/4
17 1/2
16
1 1/8
15 1/4
12
12 3/4
20 1/2
16
1 1/4
17 3/4
14
14
23
20
1 1/4
20 1/4
16
16
25 1/2
20
1 3/8
22 1/2
18
18
28
24
1 3/8
24 3/4
20
20
30 1/2
24
1 3/8
27
22
22
33
24
1 5/8
29 1/4
24
24
36
24
1 5/8
32
26
26
38 1/4
28
1 7/8
34 1/2
28
28
40 3/4
28
1 7/8
37
30
30
43
28
1 7/8
39 1/4
32
32
45 1/4
28
1 7/8
41 1/2
34
34
47 1/2
28
1 7/8
43 1/2
36
36
50
32
2 1/8
46
38
38
52 1/4
32
2 1/8
48
40
40
54 1/2
36
2 1/8
50 1/4
42
42
57
36
2 1/8
52 3/4
44
44
59 1/4
36
2 1/8
55
46
46
61 1/2
40
2 1/8
57 1/4
48
48
65
40
2 1/8
60 3/4
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