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.

SUPER MANHOLE GASKET

TOMBO™ No. 1420-ST

It is a gasket in which woven fabric is coated in a rubber compound and sewn together into a manhole shape.

SUPER MANHOLE GASKET

TOMBO™ No. 1420-S

It is a gasket in which a cloth made of alkali earth silicate wool (AES) is coated in a rubber compound and sewn together into a manhole shape.

SUPER MANHOLE GASKET

TOMBO™ No. 1420-TH

It is a gasket in which woven fabric is coated in a rubber compound and sewn together into a manhole shape.

SUPER MANHOLE GASKET

TOMBO™ No. 1400-NA

It is a gasket in which woven fabric is coated in a rubber compound and sewn together into a manhole shape.
This product is suitable for exhaust gas and hot air manholes, handholes, autoclaves, large-diameter flanges, diesel engine exhaust pipes, flue manholes, and boiler combustion openings.

NA MANHOLE GASKET

TOMBO™ No. 1374

A gasket in which a glass fiber cloth is coated in a rubber compound and sewn together into a manhole shape.
This product is suitable for exhaust gas and hot air manholes, handholes, autoclaves, large-diameter flanges, diesel engine exhaust pipes, flue manholes, and boiler combustion openings.

NA TADPOLE GASKET

TOMBO™ No. 1378

TOMBO No.1368 is a gasket that is machined into a ring shape and is suitable for the doors of furnaces, heaters, and dryers, as well as dampers and exhaust gas, hot air, and dust manholes.

NA MANHOLE GASKET

TOMBO™ No. 1374/13781420-ST/-S/-TH/1400-NA9094

An endless gasket in which woven fabric is coated in a rubber compound and sewn together into various manhole shapes. This gasket has insufficient airtightness, so use it only for parts where some slight leakage is permitted.
It is best suited for applications in which the flange diameter is large, there is distortion, or a high clamping surface pressure will not occur.

NAFLON™ MANHOLE GASKET

TOMBO™ No. 9094

It is a manhole gasket made by using PTFE dispersion for the joint material.
It is used for ducts that require chemical resistance and solvent resistance and corrosive gases such as acidic exhaust gas.

GRASEAL™ PACKING

TOMBO™ No. 2200

By using it in combination with adapter packing such as TOMBO No.2250-A, it delivers outstanding sealing performance.
The drop in performance from ultra-low temperatures to high temperatures is minimal.
Expanded graphite (GRASEAL) has chemical resistance second only to PTFE and can be used for almost any fluid, except for the prohibited fluids below.
It has little stress relaxation and so it demonstrates stable sealing performance over the long term.

GRASEAL™ PACKING M

TOMBO™ No. 2205

By using it in combination with adapter packing such as TOMBO No.2250, it delivers outstanding sealing performance.
The drop in performance from ultra-low temperatures to high temperatures is minimal.
Expanded graphite (GRASEAL) has chemical resistance second only to PTFE and can be used for almost any fluid, except for the prohibited fluids below.
It has little stress relaxation and so it demonstrates stable sealing performance over the long term.