KAMMPROFILE GASKET

TOMBO™ No. 1891-GR

It can be used under strict thermal cycle conditions, and as the load is concentrated on the serrated edges, it also demonstrates excellent sealing performance at low clamping forces.
An inner ring to prevent buckling is not needed and so it can be designed to have a narrow gasket width.
It will not come loose even when used for large diameters.
It is suitable for parts where the width of the equipment, such as heat exchangers and pressure containers, and flange seats is narrow and a VORTEX GASKET cannot be used.

METAL JACKETED GASKET

TOMBO™ No. 1841

It is possible to manufacture various shapes, such as those with branches, to suit the application and where the product will be installed.
It is used for heat exchanges, pressure containers, tower tanks, equipment, valves, high-temperature joint flanges, manholes, etc.

METAL JACKETED GASKET

TOMBO™ No. 1841-FI

It is possible to manufacture various shapes, such as those with branches, to suit the application and where the product will be installed.
As it is made of a heat-resistant core material, it is used for high-temperature heat exchangers, pressure containers, tower tanks, equipment, valves, joint flanges, manholes, etc.

METAL JACKETED GASKET

TOMBO™ No. 1861

It is possible to manufacture various shapes, such as those with branches, to suit the application and where the product will be installed.
It is used for heat exchanges, pressure containers, tower tanks, equipment, valves, high-temperature joint flanges, manholes, etc.

METAL JACKETED GASKET

TOMBO™ No. 1861-FI

It is possible to manufacture various shapes, such as those with branches, to suit the application and where the product will be installed.
As it is made of a heat-resistant cushioning material, it is used for high-temperature heat exchangers, pressure containers, tower tanks, equipment, valves, joint flanges, manholes, etc.

OCT RING JOINT GASKET

TOMBO™ No. 1850C

The Ring Joint Gasket is a gasket processed into specific shapes by machining cast metal materials. It is used for high-temperature, high-pressure pipe flanges, valves, pressure containers, and heat exchangers.
OCT RING JOINT GASKET is a gasket that offers sealing properties by having the sealed surface and the flange grooves engage in surface-to-surface contact. If carrying out sliding work, the gasket can be reused (providing the sealed surface is in good condition).

OVAL RING JOINT GASKET

TOMBO™ No. 1850V

The Ring Joint Gasket is a gasket processed into specific shapes by machining cast metal materials. It is used for high-temperature, high-pressure pipe flanges, valves, pressure containers, and heat exchangers.
With its oval shape, the sealed surface forms a linear contact and so it adapts easily to the flange grooves. On the other hand, the ring cannot be reused.

FLAT METALLIC GASKET

TOMBO™ No. 1850P

A flat gasket that is made by flattening metal.
The sealed surface adapts to the flange, and so a high clamping pressure is required.
To improve the sealing properties, nubbins may be machined on the flange.

SERRATED METALLIC GASKET

TOMBO™ No. 1890

Its shape gives it excellent sealing properties compared to flat metal gaskets.
Although it is subject to concentrated surface pressure, the flange surface may get scratched.
It is a gasket used for pipe flanges, valves, pressure containers, and heat exchangers.

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.