IFI Technical Production company locates in China and is a leading developer of graphite deposits and processing of graphite materials. The main specialization and activity - the development and production of advanced sealing and gasket materials.We produce Packings of expanded graphite, PTFE, aramid fibers, carbon fibers and other synthetic and natural fibers. Our products have over 15 years of successfully delivered to Europe, America, Australia, Russia, etc.It is one of the biggest enterprises of the mineral, chosen the mineral and deep processed in whole from China. our products, spiral wound gasket, spiral wound gaskets are widely used in the fields of petroleum & chemical industry, refining, electric power, metallurgy, machinery, papermaking, automobile, shipping building, pharmacy, aerospace industry, nuclear industry, etc. Rely on advanced technology and management system, superior production equipments and test instruments, high quality products and first-class service. The products, spiral wound gasket, spiral wound gaskets enjoy the high reputation in domestic and abroad market, and it has been exported to more than 20 countries and regions.
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:
1. Resistance to high temperature and high pressures.
2.Great resilience which allows the gasket to adjust automatically to change in operating conditions, such as pressure and thermal shocks, vibrations etc.
3.Excellent sealability is maintained with comparatively small gasket area.
4.Good tolerance for flange surface finish irregularities.
5.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.
|
Type |
Cross section |
Hoop material |
Filler material |
Inner, Outer ring material |
Normal Thickness |
|
Gaskets |
Rings |
|
Basic type |
|
CS,304(L)SS,
316(L)SS,321SS,347LSS,Monel,
Titanium,Inconel,Hastelloy B/C,
Incoloy,etc. |
Asbestos |
CS,304(L)SS,
316(L)SS,321SS,
347LSS,Monel,
Titanium, Inconel,
Hastelloy B/C
Incoloy,etc. |
2.5(.0624”)
3.2(.125”)
4.5(.175”)
6.4(.250”)
7.25(.285”) |
2
3
4 |
|
With inner ring |
|
Non-asbestos |
|
With outer ring |
|
Flexible graphite |
|
With inner &out ring |
|
PTFE |
|
Ceramic |
|
Item |
DIN (mm) |
ANSI B16.5
BS1560 (mm)
Mss sp-44 |
API 605 |
Tolerances |
|
Inner ring I.D.
Gasket 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,
JB/T90-94,ANSI,API,JPI,JIS,DIS,etc.standards or clients request. |
|
