Product Description
Spiral Wound Gaskets can be used to seal fluid pressure up to 250 bar cryoprnices temperature as low as -200°C and up to elevated temperature of 1000°C. Products are widely used in the oil, gas, petrochemical process and engineering industries.
Spiral wound gaskets type:
The table below may be used for selected material of inner ring and winding metal.
Trade name |
AISI |
Hardness(HB/HV) |
Temperature(°C) |
Stainless steel 304 |
304 |
130~180 |
-250~+550 |
Stainless steel 316 |
316 |
130~180 |
-100~+550 |
Stainless steel 316L |
316L |
130~190 |
-100~+550 |
The outer ring is generally manufactured from carbon steel with an anti-corronsion treatment. |
The table below may be used for determining the correct filler.
Filler material |
Temperature(°C)
|
Max operating pressure(kg/cm2) |
Graphite |
-200~550 |
250 |
Graphite |
-200~550 |
250 |
PTFE |
-240~260 |
100 |
Flange type and Spiral Wound Gasket form
Flange type |
Spiral Wound Gasket form |
Flat face flange(F.F) |
Gasket with an outer ring |
Gasket with an inner and outer ring |
Raised face flange(R.F)
|
Gasket with an outer ring |
Gasket with an inner and outer ring |
Male and female flange
(M & F) |
Basic form gasket |
Gasket with an inner ring |
Tongue and groove flange
(T & F)
|
Basic form gasket |
Gasket with an inner ring |
Flat and groove flange
(F & G)
|
Basic form gasket |
Gasket with an inner ring |
Tolerances of thickness
Item |
Thickness(mm) |
Tolerances(mm) |
Gasket thickness |
4.5, 3.2 |
+0.2
-0.1 |
Ring thickness |
3.0 |
±0.24 |
The table below specifies the production diameter tolerance (Nominal pipe diameter for flanges in accordance with): |
|
DIN (mm) |
ANSI B16.5
BS1560 (mm)
Mss sp-44 |
API 605 |
Tolerances |
Inner ring I.D.
Gasket I.D. |
<=600 |
<=24" |
>=26" and <=34" |
±0.5 |
>600 and <=800 |
>24" and <=34" |
>=36" and <=60" |
±0.9 |
>800 and <=1600 |
>34" and <=60" |
|
±1.3 |
>1600 |
>60" |
|
±1.6 |
Gasket O.D. |
<=600 |
<=24" |
<=24" |
±0.9 |
>600 and <=160000 |
>24" and <=60" |
>24" and <=60" |
±1.8 |
1600 |
>60" |
|
±2.2 |
Outer ring O.D |
|
|
>=1/2" and <=60" |
±0.9 |
<=600 |
<=24" |
|
0-1.0 |
>600 and <=1000 |
>24" and <=34" |
|
0-1.8 |
>1000 and <=1600 |
>34" and <=60" |
|
0-2.2 |
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