Gasket - Spiral Wound, for ANSI Class 400, B16.47, Series B (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 | 25.75 | 26.25 | 27.50 | 29.38 |
28 | 27.63 | 28.13 | 29.50 | 31.50 |
30 | 29.63 | 30.13 | 31.75 | 33.75 |
32 | 31.50 | 32.00 | 33.88 | 35.88 |
34 | 33.50 | 34.13 | 35.88 | 37.88 |
36 | 35.38 | 36.13 | 38.00 | 40.25 |
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 |