Ring Gaskets | Seal & Design, Inc.

Ring Gaskets

Seal & Design can fabricate a wide variety of ring gaskets for any pipe size. The lists below are standard guidelines for both 150lb and 300lb ring gaskets. 

Ring Gaskets for 150 lb ASME/ANSI Pipe Flanges

 

There are two styles for Ring Gaskets, Old and New.
Ring Gasket 150lb Comparison Chart

150lb Ring Gasket New Standard
Nominal Pipe Size Gasket I.D.
(Inches)
Gasket O.D.
(Inches)
1/2 27/32 1 7/8
3/4 1 1/16 2 1/4
1 1 5/16 2 5/8
1 1/4 1 21/32 3
1 1/2 1 29/32 3 3/8
2 2 3/8 4 1/8
2 1/2 2 7/8 4 7/8
3 3 1/2 5 3/8
3 1/2 4 6 3/8
4 4 1/2 6 7/8
4 1/2 5 7
5 5 9/16 7 3/4
6 6 5/8 8 3/4
7 7 5/8 10
8 8 5/8 11
10 10 3/4 13 3/8
12 12 3/4 16 1/8
14 14 17 3/4
15 15 19
16 16 20 1/4
18 18 21 5/8
20 20 23 7/8
22 22 26
24 24 28 1/4
26 26 30 1/2
28 28 32 3/4
30 30 34 3/4
32 32 37
34 34 39
36 36 41 1/4
38 38 43 5/8
40 40 45 5/8
42 42 48
46 46 52 1/8
48 48 54 1/2
50 50 56 1/2
52 52 58 3/4
54 54 61
60 60 67 1/2
66 66 74 1/4
72 72 80 3/4
84 84 93 1/2
96 96 106 1/4
  New STD   Old STD
Size I.D.
(Inches)
O.D.
(Inches)
  I.D.
(Inches)
O.D.
(Inches)
1/2 27/32 1 7/8   1/2 1 7/8
3/4 1 1/16 2 1/4   3/4 2 1/4
1 1 5/16 2 5/8   1 2 5/8
1-1/4 1 21/32 3   1 1/4 3
1-1/2 1 29/32 3 3/8   1 1/2 3 3/8
2 2 3/8 4 1/8   2 4 1/8
2-1/2 2 7/8 4 7/8   2 1/2 4 7/8
3 3 1/2 5 3/8   3 5 3/8
3-1/2 4 6 3/8   3 1/2 6 3/8
4 4 1/2 6 7/8   4 6 7/8
4 1/2 5 7   4 1/2 7
5 5 9/16 7 3/4   5 7 3/4
6 6 5/8 8 3/4   6 8 3/4
7 7 5/8 10   7 10
8 8 5/8 11   8 11
9 9 5/8 12 1/2   9 12 1/2
10 10 3/4 13 3/8   10 13 3/8
12 12 3/4 16 1/8   12 16 1/8
14 14 17 3/4   14 17 3/4
15 15 19   15 19
16 16 20 1/4   16 20 1/4
18 18 21 5/8   18 21 5/8
20 20 23 7/8   20 23 7/8
22 22 26   22 26

Ring Gaskets for 300 lb ASME/ANSI Pipe Flanges

There are two styles for Ring Gaskets, Old and New.
Ring Gasket 300lb Comparison Chart

300lb Ring Gasket New Standard
Nominal Pipe Size Gasket I.D.
(Inches)
Gasket O.D.
(Inches)
1/2 27/32 2 1/8
3/4 1 1/16 2 5/8
1 1 5/16 2 7/8
1 1/4 1 21/32 3 1/4
1 1/2 1 29/32 3 3/4
2 2 3/8 4 3/8
2 1/2 2 7/8 5 1/8
3 3 1/2 5 7/8
3 1/2 4 6 1/2
4 4 1/2 7 1/8
4 1/2 5 7 5/8
5 5 9/16 8 1/2
6 6 5/8 9 7/8
7 7 5/8 10 7/8
8 8 5/8 12 1/8
10 10 3/4 14 1/4
12 12 3/4 16 5/8
14 14 19 1/8
15 15 20 1/8
16 16 21 1/4
18 18 23 1/2
20 20 25 3/4
22 22 27 5/8
24 24 30 1/2
30 30 37 1/2
36 36 44
42 42 50 3/4
48 48 58 3/4
  New STD   Old STD
Size I.D.
(Inches)
O.D.
(Inches)
  I.D.
(Inches)
O.D.
(Inches)
1/2 27/32 2 1/8   1/2 2 1/8
3/4 1 1/16 2 5/8   3/4 2 5/8
1 1 5/16 2 7/8   1 2 7/8
1 1/4 1 21/32 3 1/4   1 1/4 3 1/4
1 1/2 1 29/32 3 3/4   1 1/2 3 3/4
2 2 3/8 4 3/8   2 4 3/8
2 1/2 2 7/8 5 1/8   2 1/2 5 1/8
3 3 1/2 5 7/8   3 5 7/8
3 1/2 4 6 1/2   3 1/2 6 1/2
4 4 1/2 7 1/8   4 7 1/8
4 1/2 5 7-5/8   4 1/2 7 5/8
5 5 9/16 8 1/2   5 8 1/2
6 6 5/8 9 7/8   6 9 7/8
7 7 5/8 10-7/8   7 10 7/8
8 8 5/8 12 1/8   8 12 1/8
9 9 5/8 12 7/8   9 12 7/8
10 10 3/4 14 1/4   10 14 1/4
12 12 3/4 16 5/8   12 16 5/8
14 14 19 1/8   13 1/4 19 1/8
15 15 20 1/8   14 1/4 20 1/8
16 16 21 1/4   15 1/4 21 1/4
18 18 23 1/2   17 23 1/2
20 20 25 3/4   19 25 3/4
22 22 27 5/8   21 27 5/8