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Winding w/Centering Ring Pipes Under 24"
    










Part Numbers
 Winding Materials
 Temp. Range
 Stainless Steel 304
-200°C
to
420°C
 Stainless Steel 316L
-200°C
to
460°C
 Filler Materials
 Graphite
Up
to
460°C
 PTFE
Up
to
500°C
 Centering Ring
 Carbon Steel
Up
to
538°C
 Inner Ring Materials
 Stainless Steel 304
-200°C
to
420°C
 Stainless Steel 316
-200°C
to
460°C
  * Stainless steel 316 and 304 can exceed their continuous operating temperatures, up to 760°C, for short‒term intervals. However, this may result in intergranular corrosion. For more information, please consult a Hi-Tech Seals representative.
ASME B16.20 for ASME B16.5 Flanges

Nom
Pipe Size
Inside Diameter of Sealing Element
Outside Diameter of
Sealing Element
Outer Diameter of Centering Ring
150
300
400
600
900
1500
2500
150,300
400, 600
900,1500
2500
150
300
400
600
900
1500
2500
4
1/2
1/2
1/2
1/2
–
–
–
7/8
–
1 - 3/4
1 - 3/4
1 - 3/4
1 - 3/4
–
–
–
1/2
3/4
3/4
3/4
3/4
3/4
3/4
3/4
1 - 1/4
1 - 1/4
1 - 7/8
2 - 1/8
2 - 1/8
2 - 1/8
2 - 1/2
2 - 1/2
2 - 3/4
3/4
1
1
1
1
1
1
1
1 - 9/16
1 - 9/16
2 - 1/4
2 - 5/8
2 - 5/8
2 - 5/8
2 - 3/4
2 - 3/4
3
1
1 - 1/4
1 - 1/4
1 - 1/4
1 - 1/4
1 - 1/4
1 - 1/4
1 - 1/4
1 - 7/8
1 - 7/8
2 - 5/8
2 - 7/8
2 - 7/8
2 - 7/8
3 - 1/8
3 - 1/8
3 - 3/8
1 - 1/4
1 - 7/8
1 - 7/8
1 - 7/8
1 - 7/8
1 - 9/16
1 - 9/16
1 - 9/16
2 - 3/8
2 - 3/8
3
3 - 1/4
3 - 1/4
3 - 1/4
3 - 1/2
3 - 1/2
4 - 1/8
1 - 1/2
2 - 1/8
2 - 1/8
2 - 1/8
2 - 1/8
1 - 7/8
1 - 7/8
1 - 7/8
2 - 3/4
2 - 3/4
3 - 3/8
3 - 3/4
3 - 3/4
3 - 3/4
3 - 7/8
3 - 7/8
4 - 5/8
2
2 - 3/4
2 - 3/4
2 - 3/4
2 - 3/4
2 - 5/16
2 - 5/16
2 - 5/16
3 - 3/8
3 - 3/8
4 - 1/8
4 - 3/8
4 - 3/8
4 - 3/8
5 - 5/8
5 - 5/8
5 - 3/4
2 - 1/2
3 - 1/4
3 - 1/4
3 - 1/4
3 - 1/4
2 - 3/4
2 - 3/4
2 - 3/4
3 - 7/8
3 - 7/8
4 - 7/8
5 - 1/8
5 - 1/8
5 - 1/8
6 - 1/2
6 - 1/2
6 - 5/8
3
4
4
4
4
3 - 3/4
3 - 5/8
3 - 5/8
4 - 3/4
4 - 3/4
5 - 3/8
5 - 7/8
5 - 7/8
5 - 7/8
6 - 5/8
6 - 7/8
7 - 3/4
3 - 1/2
4 - 1/2
4 - 1/2
4 - 1/8
4 - 1/8
4 - 1/8
4 - 1/8
–
5 - 1/4
5 - 1/4
6 - 3/8
6 - 1/2
6 - 3/8
6 - 3/8
7 - 1/2
7 - 3/8
–
4
5
5
4 - 3/4
4 - 3/4
4 - 3/4
4 - 5/8
4 - 5/8
5 - 7/8
5 - 7/8
6 - 7/8
7 - 1/8
7
7 - 5/8
8 - 1/8
8 - 1/4
9 - 1/4
4 - 1/2
5 - 1/2
5 - 1/2
5 - 5/16
5 - 5/16
5 - 5/16
5 - 5/16
–
6 - 1/2
6 - 1/2
7
7 - 3/4
7 - 5/8
8 - 1/4
9 - 3/8
9 - 1/8
–
5
6 - 1/8
6 - 1/8
5 - 13/16
5 - 13/16
5 - 13/16
5 - 5/8
5 - 5/8
7
7
7 - 3/4
8 - 1/2
8 - 3/8
9 - 1/2
9 - 3/4
10
11
6
7 - 3/16
7 - 3/16
6 - 7/8
6 - 7/8
6 - 7/8
6 - 3/4
6 - 3/4
8 - 1/4
8 - 1/4
8 - 3/4
9 - 7/8
9 - 3/4
10 - 1/2
11 - 3/8
11 - 1/8
12 - 1/2
8
9 - 3/16
9 - 3/16
8 - 7/8
8 - 7/8
8 - 3/4
8 - 1/2
8 - 1/2
10 - 3/8
10 - 1/8
11
12 - 1/8
12
12 - 5/8
14 - 1/8
13 - 7/8
15 - 1/4
10
11 - 5/16
11 - 5/16
10 - 13/16
10 - 13/16
10 - 7/8
10 - 1/2
10 - 5/8
12 - 1/2
12 - 1/4
13 - 3/8
14 - 1/4
14 - 1/8
15 - 3/4
17 - 1/8
17 - 1/8
18 - 3/4
12
13 - 3/8
13 - 3/8
12 - 7/8
12 - 7/8
12 - 3/4
12 - 3/4
12 - 1/2
14 - 3/4
14 - 1/2
16 - 1/8
16 - 5/8
16 - 1/2
18
19 - 5/8
20 - 1/2
21 - 5/8
14
14 - 5/8
14 - 5/8
14 - 1/4
14 - 1/4
14
14 - 1/4
–
16
15 - 3/4
17 - 3/4
19 - 1/8
19
19 - 3/8
20 - 1/2
22 - 3/4
–
16
16 - 5/8
16 - 5/8
16 - 1/4
16 - 1/4
16 - 1/4
16
–
18 - 1/4
18
20 - 1/4
21 - 1/4
21 - 1/8
22 - 1/4
22 - 5/8
25 - 1/4
–
18
18 - 11/16
18 - 11/16
18 - 1/2
18 - 1/2
18 - 1/4
18 - 1/4
–
20 - 3/4
20 - 1/2
21 - 5/8
23 - 1/2
23 - 3/8
24 - 1/8
25 - 1/8
27 - 3/4
–
20
20 - 11/16
20 - 11/16
20 - 1/2
20 - 1/2
20 - 1/2
20 - 1/4
–
22 - 3/4
22 - 1/2
23 - 7/8
25 - 3/4
25 - 1/2
26 - 7/8
27 - 1/2
29 - 3/4
–
24
24 - 3/4
24 - 3/4
24 - 3/4
24 - 3/4
24 - 3/4
24 - 1/4
–
27
26 - 3/4
28 - 1/4
30 - 1/2
30 - 1/4
31 - 1/8
33
35 - 1/2
–