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Gasket - Spiral Wound, for ANSI Class 150, B16.47, Series A (in)

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  • 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".

 

data gasket spiral wound 1

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 26.50 27.75 30.50
28 27.75 28.50 29.75 32.75
30 29.75 30.50 31.75 34.75
32 31.75 32.50 33.88 37.00
34 33.75 34.50 35.88 39.00
36 35.75 36.50 38.13 41.25
38 37.75 38.50 40.13 43.75
40 39.75 40.50 42.13 45.75
42 41.75 42.50 44.25 48.00
44 43.75 44.50 46.38 50.25
46 45.75 46.50 48.38 52.25
48 47.75 48.50 50.38 54.50
50 49.75 50.50 52.50 56.50
52 51.75 52.50 54.50 58.75
54 53.50 54.50 56.50 61.00
56 55.50 56.50 58.50 63.25
58 57.50 58.50 60.50 65.50
60 59.50 60.50 62.50 67.50