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Standard Flange Gasket Size Chart |
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Std |
Full Face Flange Gaskets |
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Flange |
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Size |
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È |
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125-150 LB |
250-300 LB |
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OD |
ID |
Holes |
Hole |
Bolt |
OD |
ID |
Holes |
Hole |
Bolt |
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Dia. |
Circle |
Dia. |
Circle |
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Dia. |
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Dia. |
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1/2" |
3 1/2 |
27/32 |
4 |
5/8 |
2 3/8 |
3 3/4 |
27/32 |
4 |
5/8 |
2 5/8 |
|
3/4" |
3 7/8 |
1 1/16 |
4 |
5/8 |
2 3/4 |
4 5/8 |
1 1/16 |
4 |
3/4 |
3 1/4 |
|
1" |
4 1/4 |
1 5/16 |
4 |
5/8 |
3 1/8 |
4 7/8 |
1 5/16 |
4 |
3/4 |
3 1/2 |
|
1 1/4" |
4 5/8 |
1 21/32 |
4 |
5/8 |
3 1/2 |
5 1/4 |
1 21/32 |
4 |
3/4 |
3 7/8 |
|
1 1/2" |
5 |
1 29/32 |
4 |
5/8 |
3 7/8 |
6 1/8 |
1 29/32 |
4 |
3/4 |
4 1/2 |
|
2" |
6 |
2 3/8 |
4 |
3/4 |
4 3/4 |
6 1/2 |
2 3/8 |
8 |
7/8 |
5 |
|
2 1/2" |
7 |
2 7/8 |
4 |
3/4 |
5 1/2 |
7 1/2 |
2 7/8 |
8 |
7/8 |
5 7/8 |
|
3" |
7 1/2 |
3 1/2 |
4 |
3/4 |
6 |
8 1/4 |
3 1/2 |
8 |
7/8 |
6 5/8 |
|
3 1/2" |
8 1/2 |
4 |
8 |
3/4 |
7 |
9 |
4 |
8 |
7/8 |
7 1/4 |
|
4" |
9 |
4 1/2 |
8 |
3/4 |
7 1/2 |
10 |
4 1/2 |
8 |
7/8 |
7 7/8 |
|
4 1/2" |
9 1/4 |
5 |
8 |
3/4 |
7 3/4 |
10 1/2 |
5 |
8 |
7/8 |
8 1/2 |
|
5" |
10 |
5 9/16 |
8 |
7/8 |
8 1/2 |
11 |
5 9/16 |
8 |
7/8 |
9 1/4 |
|
6" |
11 |
6 5/8 |
8 |
7/8 |
9 1/2 |
12 1/2 |
6 5/8 |
12 |
7/8 |
10 5/8 |
|
7" |
12 1/2 |
7 5/8 |
8 |
7/8 |
10 3/4 |
14 |
7 5/8 |
12 |
7/8 |
11 7/8 |
|
8" |
13 1/2 |
8 5/8 |
8 |
7/8 |
11 3/4 |
15 |
8 5/8 |
12 |
1 |
13 |
|
9" |
15 |
9 5/8 |
12 |
7/8 |
13 1/4 |
16 1/4 |
9 5/8 |
12 |
1 |
14 |
|
10" |
16 |
10 3/4 |
12 |
1 |
14 1/4 |
17 1/2 |
10 3/4 |
16 |
1 1/8 |
15 1/4 |
|
12" |
19 |
12 3/4 |
12 |
1 |
17 |
20 1/2 |
12 3/4 |
16 |
1 1/4 |
17 3/4 |
|
14" |
21 |
14 |
12 |
1 1/8 |
18 3/4 |
23 |
14 |
20 |
1 1/4 |
20 1/4 |
|
15' |
22 1/4 |
15 |
16 |
1 1/8 |
20 |
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16" |
23 1/2 |
16 |
16 |
1 1/8 |
21 1/4 |
25 1/2 |
16 |
20 |
1 3/8 |
22 1/2 |
|
18" |
25 |
18 |
16 |
1 1/4 |
22 3/4 |
28 |
18 |
24 |
1 3/8 |
24 3/4 |
|
20" |
27 1/2 |
20 |
20 |
1 1/4 |
25 |
30 1/2 |
20 |
24 |
1 3/8 |
27 |
|
22" |
29 1/2 |
22 |
20 |
1 1/4 |
27 1/4 |
33 |
22 |
24 |
1 3/8 |
29 1/4 |
|
24" |
32 |
24 |
20 |
1 3/8 |
29 1/2 |
36 |
24 |
24 |
1 5/8 |
32 |
|
26" |
34 3/4 |
26 |
24 |
1 3/8 |
31 3/4 |
38 1/4 |
26 |
28 |
1 5/8 |
34 1/2 |
|
28" |
36 1/2 |
28 |
26 |
1 3/8 |
34 |
40 3/4 |
28 |
28 |
1 5/8 |
37 |
|
30" |
38 3/4 |
30 |
28 |
1 3/8 |
36 |
43 |
30 |
28 |
1 7/8 |
39 1/4 |
|
32" |
41 3/4 |
32 |
28 |
1 5/8 |
38 1/2 |
45 1/4 |
32 |
28 |
1 7/8 |
41 1/2 |
|
34" |
43 3/4 |
34 |
32 |
1 5/8 |
40 1/2 |
47 1/2 |
34 |
28 |
1 7/8 |
43 1/2 |
|
36" |
46 |
36 |
32 |
1 5/8 |
42 3/4 |
50 |
36 |
32 |
2 1/8 |
46 |
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38" |
48 3/4 |
38 |
36 |
1 5/8 |
45 1/4 |
52 1/4 |
38 |
32 |
2 1/8 |
48 |
|
40' |
50 3/4 |
40 |
36 |
1 5/8 |
47 1/4 |
54 1/4 |
40 |
36 |
2 1/8 |
50 1/4 |
|
42" |
53 |
42 |
36 |
1 5/8 |
49 1/2 |
57 |
42 |
36 |
2 1/8 |
52 3/4 |
|
44" |
55 1/4 |
44 |
40 |
1 5/8 |
51 3/4 |
59 1/4 |
44 |
36 |
2 1/8 |
55 |
|
46" |
57 1/4 |
46 |
40 |
1 5/8 |
53 3/4 |
61 1/2 |
46 |
40 |
2 1/8 |
57 1/4 |
|
48" |
59 1/2 |
48 |
44 |
1 5/8 |
56 |
65 |
48 |
40 |
2 1/8 |
60 3/4 |
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Std |
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Flange |
Ring Type |
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Size |
Flange Gasket |
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È |
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125-150 LB |
250-300 LB |
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OD |
ID |
OD |
ID |
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1/2" |
1 7/8 |
27/32 |
2 1/8 |
27/32 |
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3/4" |
2 1/4 |
1 1/16 |
2 5/8 |
1 1/16 |
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1" |
2 5/8 |
1 5/16 |
2 7/8 |
1 5/16 |
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1 1/4" |
3 |
1 21/32 |
3 1/4 |
1 21/32 |
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1 1/2" |
3 3/8 |
1 29/32 |
3 3/4 |
1 29/32 |
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2" |
4 1/8 |
2 3/8 |
4 3/8 |
2 3/8 |
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2 1/2" |
4 7/8 |
2 7/8 |
5 1/8 |
2 7/8 |
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3" |
5 3/8 |
3 1/2 |
5 7/8 |
3 1/2 |
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3 1/2" |
6 3/8 |
4 |
6 1/2 |
4 |
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4" |
6 7/8 |
4 1/2 |
7 1/8 |
4 1/2 |
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4 1/2" |
7 |
5 |
7 5/8 |
5 |
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5" |
7 3/4 |
5 9/16 |
8 1/2 |
5 9/16 |
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6" |
8 3/4 |
6 5/8 |
9 7/8 |
6 5/8 |
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7" |
10 |
7 5/8 |
10 7/8 |
7 5/8 |
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8" |
11 |
8 5/8 |
12 1/8 |
8 5/8 |
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9" |
12 1/2 |
9 5/8 |
12 7/8 |
9 5/8 |
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10" |
13 3/8 |
10 3/4 |
14 1/4 |
10 3/4 |
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12" |
16 1/8 |
12 3/4 |
16 5/8 |
12 3/4 |
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14" |
17 3/4 |
14 |
19 1/8 |
14 |
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15' |
19 |
15 |
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16" |
20 1/4 |
16 |
21 1/4 |
16 |
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18" |
21 5/8 |
18 |
23 1/2 |
18 |
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20" |
23 3/8 |
20 |
25 3/4 |
20 |
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22" |
26 |
22 |
27 3/4 |
22 |
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24" |
28 1/4 |
24 |
30 1/2 |
24 |
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26" |
30 1/2 |
26 |
32 7/8 |
26 |
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28" |
32 3/4 |
28 |
35 3/8 |
28 |
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30" |
34 3/4 |
30 |
37 1/2 |
30 |
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32" |
38 |
32 |
39 5/8 |
32 |
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34" |
39 |
34 |
41 5/8 |
34 |
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36" |
41 1/4 |
36 |
44 |
36 |
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38" |
43 5/8 |
38 |
46 1/8 |
38 |
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40' |
45 5/8 |
40 |
48 3/4 |
40 |
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42" |
48 |
42 |
50 3/4 |
42 |
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44" |
50 1/8 |
44 |
53 |
44 |
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46" |
52 1/8 |
46 |
55 1/4 |
46 |
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48" |
54 1/2 |
48 |
58 3/4 |
48 |
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Dimensions per ANSI B16.5 standard for pipe flanges and
gaskets. |
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Dimensional Tolerances (unless otherwise stated) through
1" @ +/- 1/32", |
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from 1" through 12" @ +/- 1/16", from 12" through 24" @
+/- 3/32", and over 24" @ +/- 1/4". |
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