Gasket - Spiral Wound, for ANSI Class 300, B16.5 (in)

Written by Matt Milbury. Posted in Gasket Datasheets

Gasket - Spiral Wound (B16.20), for ANSI Class 300, B16.5 (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 1/2" through NPS 8" is ±0.03"; for NPS 10" through NPS 24", +0.06", –0.03".
  • The gasket inside diameter tolerance for NPS 1/2" through NPS 8" is ±0.016"; for NPS 10" through NPS 24", ±0.03".
  • The centering ring outside diameter tolerance is ±0.03".
  • ASME B16.20 does not include gaskets with no internal ring dimensions for NPS 1/4" or 3 1/2".

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

1/2 0.56 0.75 1.25 2.13
3/4 0.81 1.00 1.56 2.63
1 1.06 1.25 1.88 2.88
1 1/4 1.50 1.88 2.38 3.25
1 1/2 1.75 2.13 2.75 3.75
2 2.19 2.75 3.38 4.38
2 1/2 2.62 3.25 3.88 5.13
3 3.19 4.00 4.75 5.88
3 1/2 4.50 5.25 6.50
4 4.19 5.00 5.88 7.13
5 5.19 6.13 7.00 8.50
6 6.19 7.19 8.25 9.88
8 8.50 9.19 10.38 12.13
10 10.56 11.31 12.50 14.25
12 2.50 13.38 14.75 16.63
14 13.75 14.63 16.00 19.13
16 15.75 16.63 18.25 21.25
18 17.69 18.69 20.75 23.50
20 19.69 20.69 22.75 25.75
24 23.75 24.75 27.00 30.50