| G2120 SPIRAL WOUND GASKETS |
| |
|
| |
 |
CHYGRATM 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: |
|
| |
| Structure 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 |
| Asbestos |
-150~450 |
100 |
| 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 <=1600 |
>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 |
|
| |
| Note:1.We also can produce according to
JIS.JPI standards or client request. |
| |
|
| |
