Gasket - Spiral Wound, for ANSI Class 900, B16.47, Series A (in)

Written by Matt Milbury on . Posted in Gasket Datasheets

Gasket - Spiral Wound (B16.20), for ANSI Class 900, B16.47 (in) Datasheet

  • 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".
  • There are no Class 900 flanges in NPS 50" and larger.

data gasket spiral wound 1Spiral Wound Gasket Drawing

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 34.75
28 28.00 29.00 31.00 37.25
30 30.25 31.25 33.25 39.75
32 32.00 33.50 35.50 42.25
34 34.00 35.50 37.50 44.75
36 36.25 37.75 39.75 47.25
38 39.75 40.75 42.75 47.25
40 41.75 43.25 45.25 49.25
42 43.75 45.25 47.25 51.25
44 45.50 47.50 49.50 53.88
46 48.00 50.00 52.00 56.50
48 50.00 52.00 54.00 58.50