Gasket - Spiral Wound, for ANSI Class 400, B16.47, Series A (in)
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Gasket - Spiral Wound, for ANSI Class 400, B16.47, Series A (in)
Gasket - Spiral Wound, for ANSI Class 400, B16.47, Series A (in)
Dimensions to ASME B16.20 - Metallic Gaskets for Pipe Flanges: Ring-Joint, Spiral-Wound, and Jacketed
Inner rings are recommended for all graphite filled gaskets, required for all PTFE filled gaskets.
The gasket outside diameter tolerance for NPS 26" through NPS 60" is ±0.06".
The gasket inside diameter tolerance for NPS 26" through NPS 34" is ±0.03"; for NPS 36" through NPS 60" is ±0.05".
The centering ring outside diameter tolerance is ±0.03".
Pipe
Size
(NPS)
Inner
Ring
Inside
Diameter
A
Sealing
Element
Inside
Diameter
B
Sealing
Element
Outside
Diameter
C
Outer
Ring
Outside
Diameter
D
26
26.00
27.00
29.00
32.75
28
28.00
29.00
31.00
35.13
30
29.75
31.25
33.25
37.25
32
32.00
33.50
35.50
39.50
34
34.00
35.50
37.50
41.50
36
36.13
37.63
39.63
44.00
38
37.50
38.25
40.25
42.25
40
39.38
40.38
42.38
44.38
42
41.38
42.38
44.38
46.38
44
43.50
44.50
46.50
48.50
46
46.00
47.00
49.00
50.75
48
47.50
49.00
51.00
53.00
50
49.50
51.00
53.00
55.25
52
51.50
53.00
55.00
57.25
54
53.25
55.25
57.25
59.75
56
55.25
57.25
59.25
61.75
58
57.25
59.25
61.25
63.75
60
59.75
61.75
63.75
66.25
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