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Inner Ring Dimensions Pipes Under 24"

    











Part Numbers


Standard inside diameter of inner rings for SWG

Nom
Pipe Size
Pressure Class
150
300
400
600
900
1500
2500
1/2
0.56
0.56
0.56
0.56
0.56
0.56
0.56
3/4
0.81
0.81
0.81
0.81
0.81
0.81
0.81
1
1.06
1.06
1.06
1.06
1.06
1.06
1.06
1-1/4
1.50
1.50
1.50
1.50
1.31
1.31
1.31
1-1/2
1.75
1.75
1.75
1.75
1.63
1.63
1.63
2
2.19
2.19
2.19
2.19
2.06
2.06
2.06
2-1/2
2.62
2.62
2.62
2.62
2.50
2.50
2.50
3
3.19
3.19
3.19
3.19
3.10
3.10
3.10
4
4.19
4.19
4.04
4.04
4.04
3.85
3.85
5
5.19
5.19
5.05
5.05
5.05
4.90
4.90
6
6.19
6.19
6.10
6.10
6.10
5.80
5.80
8
8.50
8.50
8.10
8.10
7.75
7.75
7.75
10
10.56
10.56
10.05
10.05
9.69
9.69
9.69
12
12.50
12.50
12.10
12.10
11.50
11.50
11.50
14
13.75
13.75
13.50
13.50
12.63
12.63
-
16
15.75
15.75
15.35
15.35
14.75
14.50
-
18
17.69
17.69
17.25
17.25
16.75
16.75
-
20
19.69
19.69
19.25
19.25
19.00
18.75
-
24
23.75
23.75
23.25
23.25
23.25
22.75
-


Series B Flanges 26" and Over

Nom
Pipe Size
Class 75
 
Class 150
   
Class 300
 
Sealing Element
Sealing Element
Sealing Element
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
26
26-1/4
27
27-7/8
25-3/4
26-1/2
27-1/2
28-9/16
25-3/4
26-1/2
28
30-3/8
28
28-1/4
29-1/8
29-7/8
27-3/4
28-1/2
29-1/2
30-9/16
27-3/4
28-1/2
30
32-1/2
30
30-1/4
31-1/8
31-7/8
29-3/4
30-1/2
31-1/2
32-9/16
29-3/4
30-1/2
32
34-7/8
32
32-1/4
33-1/8
33-7/8
31-3/4
32-1/2
33-1/2
34-11/16
31-3/4
32-1/2
34
37
34
34-1/4
35-1/8
35-7/8
33-3/4
34-1/2
35-3/4
36-13/16
33-3/4
34-1/2
36
39-1/8
36
36-1/4
37-1/4
38-5/16
35-3/4
36-1/2
37-3/4
38-7/8
35-3/4
36-1/2
38
41-1/4
38
-
-
-
37-3/4
38-3/8
39-3/4
41-1/8
38-1/4
39-3/4
41-1/4
43-1/4
40
-
-
-
39-3/4
40-1/4
41-7/8
43-1/8
40-1/4
41-3/4
43-1/4
45-1/4
42
42-1/4
43-1/4
44-5/16
41-3/4
42-1/2
43-7/8
45-1/8
42-3/4
43-3/4
45-1/4
47-1/4
44
-
-
-
43-3/4
44-1/4
45-7/8
47-1/8
44-1/4
45-3/4
47-1/4
49-1/4
46
-
-
-
45-3/4
46-1/2
48-3/16
49-7/16
46-3/8
47-7/8
49-3/8
51-7/8
48
48- 3/8
49- 1/2
50- 1/2
47-3/4
48-1/2
50
51-7/16
48-1/2
49-3/4
51-5/8
53-7/8
50
-
-
-
49-3/4
50-1/2
52-3/16
53-7/16
49-7/8
51-7/8
53-3/8
55-7/8
52
-
-
-
51-3/4
52-1/2
54-3/16
55-7/16
51-7/8
53-7/8
55-3/8
57-7/8
54
54-3/8
55-5/8
56-5/8
53-3/4
54-1/2
56
57-5/8
53-3/4
55-1/4
57-1/4
60-1/4
56
-
-
-
56
56-7/8
58-3/16
59-5/8
56-1/4
58-1/4
60
62-3/4
58
-
-
-
58-3/16
59-1/16
60-3/16
62-3/16
58-7/16
60-7/16
61-15/16
65-3/16
60
60-1/2
61-3/4
62-7/8
60-7/16
61-5/16
62-7/16
64-3/16
61-5/16
62-9/16
64-3/16
67-3/16


Nom
Pipe Size
 
Class 400
 
Class 600
   
Class 900
 
Sealing Element
Sealing Element
Sealing Element
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
26
25-3/4
26-1/4
27-1/2
29-3/8
25-3/8
26-1/8
28-1/8
30-1/8
26-1/4
27-1/4
29-1/2
33
28
27-5/8
28-1/8
29-1/2
31-1/2
27
27-3/4
29-3/4
32-1/4
28-1/4
29-1/4
31-1/2
35-1/2
30
29-5/8
30-1/8
31-3/4
33-3/4
29-5/8
30-5/8
32-5/8
34-5/8
30-3/4
31-3/4
33-3/4
37-3/4
32
31-1/2
32
33-7/8
35-7/8
31-1/4
32-3/4
34-3/4
36-3/4
33
34
36
40
34
33-1/2
34-1/8
35-7/8
37-7/8
33-1/2
35
37
39-1/4
35-1/4
36-1/4
38-1/4
42-1/4
36
35-3/8
36-1/8
38
40-1/4
35-1/2
37
39
41-1/4
36-1/4
37-1/4
39-1/4
44-1/4
38
37-1/2
38-1/4
40-1/4
42-1/4
37-1/2
39
41
43-1/2
39-3/4
40-3/4
42-3/4
47-1/4
40
39-3/8
40-3/8
42-3/8
44-3/8
39-3/4
41-1/4
43-1/4
45-1/2
41-3/4
43-1/4
45-1/4
49-1/4
42
41-3/8
42-3/8
44-3/8
46-3/8
42
43-1/2
45-1/2
48
43-3/4
45-1/4
47-1/4
51-1/4
44
43-1/2
44-1/2
46-1/2
48-1/2
43-3/4
45-3/4
47-3/4
50
45-1/2
47-1/2
49-1/2
53-7/8
46
46
47
49
50-3/4
45-3/4
47-3/4
49-3/4
52-1/4
48
50
52
56-1/2
48
47-1/2
49
51
53
48
50
52
54-3/4
50
52
54
58-1/2
50
49-1/2
51
53
55-1/4
50
52
54
57
-
-
-
-
52
51-1/2
53
55
57-1/4
52
54
56
59
-
-
-
-
54
53-1/4
55-1/4
57-1/4
59-3/8
54-1/4
56-1/4
58-1/4
61-1/4
-
-
-
-
56
55-1/4
57-1/4
59-1/4
61-3/4
56-1/4
58-1/4
60-1/4
63-1/2
-
-
-
-
58
57-1/4
59-3/4
61-1/4
63-3/4
58
60-1/2
62-1/2
65-1/2
-
-
-
-
60
59-3/4
61-3/4
63-3/4
66-1/4
60-1/4
62-3/4
64-3/4
68-1/4
-
-
-
-


Series A Flanges 22" and Over

Nom
Pipe Size
 
Class 150
 
Class 300
   
Class 400
 
Sealing Element
Sealing Element
Sealing Element
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
22
-
22-3/4
24
26
-
22-3/4
24-3/4
27-3/4
-
22-3/4
24-3/4
27-5/8
26
25-3/4
26-1/2
27-3/4
30-1/2
25-3/4
27
29
32-7/8
26
27
29
32-3/4
28
27-3/4
28-1/2
29-3/4
32-3/4
27-3/4
29
31
35-3/8
28
29
31
35-1/8
30
29-3/4
30-1/2
31-3/4
34-3/4
29-3/4
31-1/4
33-1/4
37-1/2
29-3/4
31-1/4
33-1/4
37-1/4
32
31-3/4
32-1/2
33-7/8
37
31-3/4
33-1/2
35-1/2
39-5/8
32
33-1/2
35-1/2
39-1/2
34
33-3/4
34-1/2
35-7/8
39
33-3/4
35-1/2
37-1/2
41-5/8
34
35-1/2
37-1/2
41-1/2
36
35-3/4
36-1/2
38-1/8
41-1/4
35-3/4
37-5/8
39-5/8
44
36-1/8
37-5/8
39-5/8
44
38
37-3/4
38-1/2
40-1/8
43-3/4
37-1/2
38-1/2
40
41-1/2
37-1/2
38-1/4
40-1/4
42-1/4
40
39-3/4
40-1/2
42-1/8
45-3/4
39-1/2
40-1/4
42-1/8
43-7/8
39-3/8
40-3/8
42-3/8
44-3/8
42
41-3/4
42-1/2
44-1/4
48
41-1/2
42-1/4
44-1/8
45-7/8
41-3/8
42-3/8
44-3/8
46-3/8
44
43-3/4
44-1/2
46-3/8
50-1/4
43-1/2
44-1/2
46-1/2
48
43-1/2
44-1/2
46-1/2
48-1/2
46
45-3/4
46-1/2
48-3/8
52-1/4
45-3/8
46-3/8
48-3/8
50-1/8
46
47
49
50-3/4
48
47-3/4
48-1/2
50-3/8
54-1/2
47-5/8
48-5/8
50-5/8
52-1/8
47-1/2
49
51
53
50
49-3/4
50-1/2
52-1/2
56-1/2
49
51
53
54-1/4
49-1/2
51
53
55 1/
52
51-3/4
52-1/2
54-1/2
58-3/8
52
53
55
56-1/4
51-1/2
53
55
57-1/4
54
53-1/2
54-1/2
56-1/2
61
53-1/4
55-1/4
57-1/4
58-3/4
53-1/4
55-1/4
57-1/4
59-3/4
56
55-1/2
56-1/2
58-1/2
63-1/4
55-1/4
57-1/4
59-1/4
60-3/4
55-1/4
57-1/4
59-1/4
61-3/4
58
57-1/2
58-1/2
60-1/2
65-1/2
57
59-1/2
61-1/2
62-3/4
57-1/4
59-1/4
61-1/4
63-3/4
60
59-1/2
60-1/2
62-1/2
67-1/2
60
61-1/2
63-1/2
64-3/4
59-3/4
61-3/4
63-3/4
66-1/4



Nom
Pipe Size
 
Class 600
 
Class 900
 
Sealing Element
Sealing Element
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
Inner Ring I.D.
I.D.
O.D.
Centering Ring O.D.
22
-
22-3/4
24-3/4
28-7/8
-
-
-
-
26
25-1/2
27
29
34-1/8
26
27
29
34-3/4
28
27-1/2
29
31
36
28
29
31
37-1/4
30
29-3/4
31-1/4
33-1/4
38 1/=
30-1/4
31-1/4
33-1/4
39-3/4
32
32
33-1/2
35-1/2
40-1/4
32
33-1/2
35-1/2
42-1/4
34
34
35-1/2
37-1/2
42-1/4
34
35-1/2
37-1/2
44-3/4
36
36-1/8
37-5/8
39-5/8
44-1/2
36-1/4
37-3/4
39-3/4
47-1/4
38
37-1/2
39
41
43-1/2
39-3/4
40-3/4
42-3/4
47-1/4
40
39-3/4
41-1/4
43-1/4
45-1/2
41-3/4
43-1/4
45-1/4
49-1/4
42
42
43-1/2
45-1/2
48
43-3/4
45-1/4
47-1/2
51-1/4
44
43-3/4
45-3/4
47-3/4
50
45-1/2
47-1/2
49-1/2
53-7/8
46
45-3/4
47-3/4
49-3/4
52-1/4
48
50
52
56-1/2
48
48
50
52
54-3/4
50
52
54
58-1/2
50
50
52
54
57
-
-
-
-
52
52
54
56
59
-
-
-
-
54
54-1/4
56-1/4
58-1/4
61 1/4
-
-
-
-
56
56-1/4
58-1/4
60-1/4
63-1/2
-
-
-
-
58
58
60-1/2
62-1/2
65-1/2
-
-
-
-
60
60-1/4
62-3/4
64-3/4
68-1/4
-
-
-
-