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 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.

Rubber O-ring BLAZER NEXT™

TOMBO™ No. 2670-BNX

BLAZER NEXT is a perfluoroelastomer with excellent heat resistance, radical resistance, purity, and non-stickiness thanks to Nichias’ proprietary cross-linking technologies.
It seals in strict environments where other rubber materials struggle.

BLAZER™ O-ring-S2

TOMBO™ No. 2675-S2

BLAZER S2 is a perfluoroelastomer that shows stable sealing performance in environments with high-temperature steam and nucleophilic agents.
It is a product with significantly improved steam resistance, rapid decompression properties, and crushing properties thanks to Nichias’ newly developed, original cross-linking agent and its proprietary mixing technologies.

BLAZER™ O-ring-A

TOMBO™ No. 2675-A

It has excellent chemical resistance and demonstrates resistance against polar solvents such as amines and chemicals such as organic acids that cannot be used with other fluoroelastomers. It suffers little metal elution and is suitable for applications that require both chemical resistance and purity.

BLAZER™ O-ring-FC

TOMBO™ No. 2675-FC, 2685-FC

BLAZER O-ring-FC (BFC) and BLAZER O-ring-FE (BFE) are made of special fluoroelastomers (special FKM) that are plasma resistant and inexpensive. Thanks to Nichias’ blending technologies, the plasma reduces the weight of the rubber and reduces the occurrence of cracks, and at the same time, it is significantly less expensive than perfluoroelastomer (FFKM).

BLAZER™ O-ring-FE

TOMBO™ No. 2675-FE, 2685-FE

BLAZER O-ring-FC (BFC) and BLAZER O-ring-FE (BFE) are made of special fluoroelastomers (special FKM) that are plasma resistant and inexpensive. Thanks to Nichias’ blending technologies, the plasma reduces the weight of the rubber and reduces the occurrence of cracks, and at the same time, it is significantly less expensive than perfluoroelastomer (FFKM).