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 |
