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.

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.

METAL O-SEAL

TOMBO™ No. 9200P

A gasket made by molding thin metal piping into the shape of an O-ring, welding it at the ends, and then subjecting the surface to ultra-precision finishing. This gasket provides a very reliable, top-class seal across a wide range of conditions from high temperatures to low temperatures and high pressure to vacuum states.
It is used by fitting it onto the grooves and fully clamping it to enable a high-pressure seal with little clamping force.
If the internal pressure is 7 MPa or more, please use TOMBO No.9200V (model with holes).
In the case of gaseous fluids, vacuumed fluids, and highly volatile fluids, Nichias recommends its PTFE coating or silver plating specifications.
It is used for various applications such as valve bonnets, high-pressure container flanges, equipment joints, pipe flanges, plastic processing machinery, rubber extruders, hydraulic equipment, air pressure equipment, vacuum equipment, nuclear vessels, aircraft engines, rocket engines, and automobile engines.

METAL O-SEAL

TOMBO™ No. 9200V

A gasket made by molding thin metal piping into the shape of an O-ring, welding it at the ends, and then subjecting the surface to ultra-precision finishing. This gasket provides a very reliable, top-class seal across a wide range of conditions from high temperatures to low temperatures and high pressure to vacuum states.
TOMBO No.9200V has two or more small holes on the inside (for internal pressure) of the ring or outside (for outside pressure) and demonstrates top-class sealing even at high pressure due to fluid entering the inside of the ring and causing autofrettage to take place.
In the case of gaseous fluids, vacuumed fluids, and highly volatile fluids, Nichias recommends its PTFE coating or silver plating specifications.
It is used for various applications such as valve bonnets, high-pressure container flanges, equipment joints, pipe flanges, plastic processing machinery, rubber extruders, hydraulic equipment, air pressure equipment, vacuum equipment, nuclear vessels, aircraft engines, rocket engines, and automobile engines.

Rubber O-ring Fluoro-Plus

TOMBO™ No. 2670-FA-F

Fluoro-Plus is a special fluoroelastomer that maintains the chemical resistance and heat resistance of a regular fluoroelastomer but has significantly improved wear resistance and non-stickiness.
Fluoro-Plus is different from outer membrane coatings and is a product that undergoes treatment by way of a surface improvement method. As a result, it maintains its attributes over the long term and it experiences no peeling of the surface layer.

METAFOAM

TOMBO™ No. 1608-V

It is a gasket used for engine intake parts and not only acts as a seal but also insulates against engine vibration.

Nuclear power-related work

Nichias actively engages in heat-insulation work and radioactivity shielding work for nuclear power facilities and provides the quality required to meet its customers’ demands.