Description
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| Spiral Wound Gasket is the ideal gasket in the semi-metallic category. A narrow strip of V-shap metal hoop is spirally wound under tension with a filler cushion between the lamination of the metal and is spot-welded at both ends. This unique construction of a spring-like metal and soft filler provides gasket excellent characteristics: ※ Resistance to high temperature and high pressures. ※ Great resilience which allows the gasket to adjust automatically to change in operating conditions, such as pressure and thermal shocks, vibrations etc. ※ Excellent sealability is maintained with comparatively small gasket area. ※ Good tolerance for flange surface finish irregularities. ※ Can be designed to any dimensions economically in circular or moderately noncircular shape. Available in a variety of hoop metals and filler materials to satisfy specific operating conditions. |
| ※Structure: |
|
Type |
Cross section |
Hoop material |
Filler material |
Inner, Outer ring material |
Normal Thickness |
|
|
Gaskets |
Rings |
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|
Basic type |
|
CS,304(L)SS, |
Asbestos |
CS,304(L)SS, |
2.5(.0624”) |
2 |
|
With inner ring |
|
Non-asbestos |
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|
With outer ring |
|
Flexible graphite |
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|
With inner &out ring |
|
PTFE |
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|
Ceramic |
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| ※Available Sizes: |
|
Item |
DIN (mm) |
ANSI B16.5 |
API 605 |
Tolerances |
|
Inner ring I.D. |
≤600 |
≤24" |
≥26" & ≤34" |
±0.5 |
|
>600 & ≤800 |
>24" & ≤ 34" |
≥36" & ≤60" |
±0.9 |
|
|
>800 & ≤1600 |
>34" & ≤60" |
- |
±1.3 |
|
|
>1600 |
>60" |
- |
±1.6 |
|
|
Gasket O.D. |
≤600 |
≤24" |
≥24" |
±0.9 |
|
>600 & ≤1600 |
>24" & ≤60" |
>24" & ≤60" |
±1.8 |
|
|
>1600 |
>60" |
- |
±2.2 |
|
|
Outer ring O.D |
- |
- |
≥1/2" &≤ 60" |
±0.9 |
|
≤600 |
≤24" |
- |
0-1.0 |
|
|
>600 & ≤1000 |
>24" & ≤34" |
- |
0-1.8 |
|
|
>1000 & ≤1600 |
>34" & ≤60" |
- |
0-2.2 |
|
Note: We also can produce according to GB4622.2-93,JB4705-92,JB/T4719-92,SH3407-96,HG20610-97, |
