Asbestos Free(Non-Asbestos Gasket) Ecological
Metal Jacket Gasket and Joint Sheet Gasket


NAPI heat resistant gasket for the highest performance

Metal jacket gaskets are used for various high temperature lines such as power plants, boilers, engines, chemical plants, petrochemical plants and others because of its high sealing performance. But asbestos is prohibited to use now in many countries. NAPI(R) is made of zero-asbestos material. So NAPI has both high performance gasket function and environmental friendly function.

Why is NAPI safety packing?

NAPI(R) use fine zero-asbestos material "ZERO-AS BOARD(R)" not non-asbests material for inner material. "ZERO-AS BOARD(R)" is basically made from biosoluble inorganic fiber, so the asbestos content ratio of "ZERO-AS BOARD(R)" is almost 0% !! (less than 0.0001% by EPA method)

NAPI Metal Jacket Gasket

The characteristics of NAPI metal jacket type gasket

Copper Jacket

Stainless Steel Jacket

1.High sealing performance.

2.High performance of heat tolerance, pressure resistance and durability.

3.High cushioning characteristic by intensified bearing resistant strength.

4.JIS, ASME, JPI standard line up. JIS 5K, 10K, 16K(20K), 30K, 40K, 63K ASME/JPI Class150(G1,G2) 300(G1,G2)
JIS 5K, 10K, 16K(20K), 30K, 40K, 63K ASME/JPI Class150(G1,G2) 300(G1,G2)

5.Original shape gaskets are available.

Stracture of NAPI metal packing

Working and Test Temperature (Deg. C)
Test Temp.800 Deg.C1000 Deg.C 1000 Deg.C1000 Deg.C
Working Temp.600 Deg.C 800 Deg.C820 Deg.C900 Deg.C

NAPI metal jackets are used in various industrial fields

-For high temperature / high pressure steam line sealing

NAPI-600 or 800 series

-For diesel internal combustion engines (ships/vessels etc.)

Exhaust gasket, Head gasket, Supply and exhaust gasket for co-generator

For car and motorcycle engines

Copper packing, Head gasket

-For petroleum refining, petrochemistry, paper-manufacturing plants

Various gasket, RF type gasket, FF type gasket (JIS, ASME, JPI standard)

-For thermal power plant

Full face type gasket, Ring gasket (metal jacket type JIS, ASME, JPI standard)

-For high temperature plant such as incinerator, steel facilities

Full face type gasket, Ring gasket (metal jacket type JIS, ASME, JPI standard)

-For high temperature vacuum facility plants

Metal flat type gasket

Various Shape Gaskets can be acceptable!

Not only JIS/ASME standard shape but also other shape gasket can be produced.
We can produce customers original shape gasket!

NAPI Joint Sheet Gasket

The characteristics of NAPI Joint Sheet Gasket

1.High sealing performance. 0.0004 Pa m3/s (by "He" leak detector)

2.Up to 300 deg.C working temperature

3.Environmental/Human friendly material

The materiala of NAPI joint Sheet is BSF (Bio Soluble Fiber)

which meets EC 1272/2008 CLP/EC Note Q.

You don't worry about Asbestos problem!

NAPI-J55 (Normal)

NAPI-JSM (For High Temp.)

Working Temperature (Deg. C) and Pressure
Working Temp.-50 to 230 Deg.C-50 to 150 Deg.C-50 to 300 Deg.C-50 to 230 Deg.C
Working Press.2.0 Mpa4.0 Mpa2.0 Mpa4.0 Mpa
Aqueous FluidWater, Sea water, Warm and hot water, Steam, Extra heated Steam, etc.
Oil FluidCrude oil, Naphtha, Alcohol, LPG, Ethylene glycol, Ethylene, Ammonia solvent, etc.
Line up (Full Face type Gasket)
StandardJIS 5k, 10k, 16k / ASME Class150, 300
SizeJIS 5K10mm to 1200mm
JIS 10K10mm to 1200mm
JIS 16K10mm to 600mm
ASME #1501/2" to 48"
ASME #3001/2" to 46"
* Ring type gasket is avairable

If there is anything we can help you with,
please do not hesitate to contact us.

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