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Expandable graphite gasket is also called flexible graphite gasket, and made of perforated or cut expandable graphite roll or plate.

Advantages:

The product contains no bonding agent and additives, so it has high purity, good anti-corrosion, high and low temperature resistance, good compression resilience and high strength. It is suitable for use in sealing at low pressure to avoid electrochemical corrosion between graphite and flange.

Usage:

The product can be made into various gaskets with different shapes, widely used in pipe, valve, pump, pressure container, heat exchanger, condensator, air compressor, vent pipe, refrigerating machine, etc.

Specifications of Expandable graphite gasket

The product specification can be made according to the customer's requirements.

Main Technical indices of Expandable graphite gasket

Item Technical indices
Tolerance of density -0.06~+0.06 g/cm3
Tolerance of thickness -0.04~+0.04 mm
Carbon content 99 %
Tensile strength 4.5 MPa
Compressibility >40 %
Recovery >10 %
Sulphur content <1000 ppm
Chlorine content <45 ppm
Working Temperature -200~+600 °C

Remark:The above technical indices could be adjusted according to the customer's requirements.

Flexible graphite reinforcing composite gasket is made of various flexible graphite reinforcing composite plate through precision cutting or coining according to client’s specified size.

Advantages:

1. Good high and low temp-resisting, anti-corrosion, anti- irradiating, anti-high-pressure
?. performances. And it has wide applicability.
2. Fine filling performance and plasticity. It needs not high the precision of sealing surface and the

??
pre-tight stress is lesser.
3. It is easy to dismantle and is convenient to clean while overhauling so that the intensity of labor is

?. lightened greatly.
4. Higher mechanical strength and excellent resiliency.
5. It is not aged. Its service life and storing period are longer and can be used repeatedly.
6. Good impermeability.
7. It is simple for gasket manufacturing. It also can be processed in the overhauling site. This is
?. adaptive especially to the deformed gasket.
8. It can replace the iron gasket, asbestos gasket, metallic gasket, pure copper gasket as well as
?. those sealing gaskets manufacture with vegetable fiber mineral fibers and chemical fiber, and it
?. yet can compensate the defects of the gaskets mentioned above.

Usage:

It is suitable for use in corrosive media such as hot water, high temperature and high pressure vapor, hydrogen gas, ammonia, solvent, hydrocarbon, super low temperature liquid, etc., and is widely used in pipe, valve, pump, pressure container, heat exchanger, condensator, tower, shell cover, observation hole,, flange connection, water level gauge, liquid level gauge, crystallizer, survey meter, etc.

Specifications of Flexible graphite reinforcing composite gasket

Type

Lining material

Maximum size

ATCN-003A

SS304, 316 stainless steel, aluminum, and copper flat plate, etc.

Φ8~3000mm
ATCN-003B

Carbon steel, 304,316 stainless steel, aluminum, and copper toothed plate, etc.

ATCN-003C

Different quantity of wires, 304,316 stainless steel netting and aluminum netting, etc.

Remark:The product specification can be made according to the customer's requirements.

Main Technical indices of Flexible graphite reinforcing composite gasket

Item
Technical indices
Item
Technical indices
Service pressure ≤6.3Mpa Tensile strength 460kgf/cm2
Service temperature -200~650℃ (Oxidizing medium≤450℃) Compressive strength 1200kgf/cm2
Min. pre-tight pressure Y=30Mpa Resilience 15~33%
Density 2~2.4g/cm3 Compressibility 25~60%
Permeability of nitrogen gas ≤1X10-4cm3/s ?? ??

Remark:The above technical indices could be adjusted according to the customer's requirements.

 

Metal spiral wound gasket is made of high quality alloy strip or stainless steel strip and filling materials such as graphite, asbestos and polytetrafluoroethylene through spiral winding in V or W shape. According to rigidity and anti-pressure during use, its structure can be divided into four types, including basic type, inner ring type, outer ring type and inner and outer ring type.

 

Advantages:

Metal material is mainly used as skeleton material in this gasket structure, so this structure has high strength and good rigidity. Expandable graphite strip is used as filling material, so this product has good sealing performance,, high and low temperature resistance, high pressure resistance, thermal circulation and temperature circulation resistance, etc. The gasket is made of different materials to avoid chemical corrosive of various media to gasket.

Usage:

The product is used for static sealing in flange connection of pipe, valve, pump, pressure container, condensator, tower, manhole, hand hole etc.and It is more suitable for use in alternately changeable temperature due to its high machinery strength and convenient use, good compression resilience.

Specifications of Metal spiral wound gasket:The product specification can be made according to the customer's requirements.

Structural material for Metal spiral wound gasket:

Filler Hoop Inner ring Outer ring
graphite SUS 316 SUS 304 SUS 304
asbestos SUS 304 Carbon Steel Carbon Steel
PTFE SUS 316L SUS 316 SUS 316
    SUS 316L SUS 316L

Main Technical indices of Metal spiral wound gasket

Item Technical indices
Tolerance of gasket's thickness (mm) +0.2 -0.1
Tolerance of ring's thickness (mm) ±0.24
Service pressure graphite: ≤20MPa
asbestos: ≤25MPa
PTFE: ≤10MPa
Service temperature graphite:-200℃~850℃(Oxidizing medium≤600℃)
asbestos:-200℃~500℃
PTFE:-200℃~260℃
Min. pre-tight pressure y=68MPa

Remark:The above technical indices could be adjusted according to the customer's requirements.




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