PTFE soft-type gasket
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NICHIAS SOFT SEAL
TOMBO™ No. 9096
It is a soft gasket made of PTFE.
It is extremely soft, and the model with adhesive tape can easily be installed on sealed surfaces of complex shapes.
It is used for the likes of pipe sealant, tanks, casing, pressure containers, stress tanks, lining equipment, and large-diameter equipment.
Expanded graphite gasket
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GRASEAL™ GASKET
TOMBO™ No. 1200
It is more cost-effective than the other GRASEAL GASKET models.
As it is weaker and less workable than the steel sheet type, Nichias recommends using it only for nominal diameters of 4 inches or less.
It can be used for uniquely shaped flanges such as liquid level gauges, as well as various industrial pipe flanges, heat exchanges, and valve bonnets.
Expanded graphite gasket
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GRASEAL™ GASKET MI-A
TOMBO™ No. 1210-A
It is stronger than TOMBO No.1215-A due to its pronged steel plate.
Nichias recommends this product if TOMBO No.1215-A is not strong enough for you or if there are specification restrictions.
Expanded graphite gasket
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GRASEAL™ GASKET PM
TOMBO™ No. 1215
It has excellent workability and can be machined into complex shapes.
It is used for uniquely shaped flanges, valve bonnets, heat exchangers, etc.
Nichias also offers TOMBO No.1215-T, which has improved sealing performance against gas by undergoing treatment to make it impervious. (However, its maximum working temperature is 260°C.)
Expanded graphite gasket
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GRASEAL™ GASKET PM-A
TOMBO™ No. 1215-A
It has excellent workability and can be machined into complex shapes.
It is used for uniquely shaped flanges, valve bonnets, heat exchangers, etc.
Corrugated metal gasket bonded with expanded graphite
CMGC GASKET
TOMBO™ No. 1880-GR
It is a gasket that, by adopting a corrugated design, concentrates the surface pressure and improves the sealing performance.
It can also be machined into unique shapes such as frames and flat faces.
It is used for uniquely shaped flanges, valve bonnets, and heat exchangers, and has also been used at many overseas oil companies.
The performance hardly drops from low temperatures to high temperatures (400°C).
It can be used for almost all fluids, except for strong oxidizing acids.
Spiral wound gaskets with expanded graphite filler (for low temperatures and low surface pressure sealant)
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VORTEX™ GASKET
TOMBO™ No. 1839R
It is a gasket with a large amount of filler outside the sealed surface and that enables a seal with less clamping force than regular GRASEAL™ and VORTEX™ gaskets.
It can also be used for low-temperature production lines such as liquefied natural gas (LNG), liquid nitrogen (LN2), and liquefied air.
Spiral wound gasket with expanded graphite filler
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VORTEX™ GASKET
TOMBO™ No. 1804-GR
It demonstrates excellent sealing performance even in strict conditions such as high temperatures and high pressures, ultra-low temperatures, and thermal cycles.
It offers better sealing performance than NA VORTEX GASKET (particularly sealing against gas).
As it has excellent corrosion resistance, it can be used for corrosive fluids if you choose an appropriate hoop material.
It has excellent sealing performance at low-temperature conditions.
It is a gasket that is particularly suitable for high-temperature and high-pressure steam applications such as pipe flanges, valves, pressure containers, heat exchangers, and valve bonnets of various industries, as well as low-temperature applications like liquefied natural gas (LNG).