Sealing materials (For Automobiles)

TOMBO™ No. 1600 METAKOTE™

Oil-resistant rubber coat type
TOMBO™ No. 1600
METAKOTE™
It is an adhesive material with excellent heat resistance, LLC resistance, and oil resistance.

Product attributes

		TS-3525	TU-3020	Another's company material
Heat aging resistance 120°C×500hr	Change in thickness rate	-0.8%	-0.7%	+0.7%
Heat aging resistance 120°C×500hr	C/C test	100	100	100
Oil resistance 150°C×500hr	Change in thickness rate	-0.8%	-0.9%	-3.0%
Oil resistance 150°C×500hr	C/C test	100	100	100
LLC resistance 120°C×500hrL	Change in thickness rate	+0.8%	+0.3%	+7.0%
LLC resistance 120°C×500hrL	C/C test	100	100	100

Usage track recor d

Head GKT, intake manifold GKT, water pump GKT, throttle body GKT, oil cooler GKT, etc.

TOMBO is a registered trademark or trademark of NICHIAS Corporation.
Name of products with "®" are registered trademarks of NICHIAS Corporation.
Name of products with "™" are trademarks of NICHIAS Corporation.

TOMBO™ No. 1608 METAFOAM™

Oil-resistant foamed rubber coat type
TOMBO™ No. 1608
METAFOAM™
It is a material that adapts very well to flanges.

Product attributes

		PS-12020	PS-8525	PS-6020
Oil resistance	Change in thickness rate	-0.5	-0.7	-0.6
Fuel Oil resistance	Change in thickness rate	+9.2	+8.7	+8.1
LLC resistance	Change in thickness rate	+-1.5	-1.4	-0.3
Stress relaxation rate		21	15	100

*Unit: %
*Test conditions: Oil resistance = 130°C for 24 h, Fuel oil resistance = 95°C for 24 h, LLC resistance = 95°C for 24 h

Usage track recor d

Water pump GKT, surge tank GKT, oil pan GKT, brake booster GKT, ventilation baffles, etc.

TOMBO is a registered trademark or trademark of NICHIAS Corporation.
Name of products with "®" are registered trademarks of NICHIAS Corporation.
Name of products with "™" are trademarks of NICHIAS Corporation.

TOMBO™ No. 1850E Exhaust Manifold Gasket

Exhaust system gasket
TOMBO™ No. 1850E
EXHAUST MANIFOLD GASKET
An engine exhaust system gasket that also demonstrates excellent sealing performance with high-temperature combustion gas.

Forte

By adding beads to a thin stainless steel plate with excellent heat resistance, it adapts to the deformation and behavior of the corresponding flange. Its layered structure gives it excellent sealing properties.

Application

Exhaust manifold gasket
Turbo gasket
DPF gasket
Exhaust pipe gasket

TOMBO is a registered trademark or trademark of NICHIAS Corporation.
Name of products with "®" are registered trademarks of NICHIAS Corporation.
Name of products with "™" are trademarks of NICHIAS Corporation.

TOMBO™ No. 1824 VORTEX™ GASKET

Spiral wound gasket for exhaust pipes
TOMBO™ No. 1824
VORTEX™ GASKET
It is an exhaust pipe gasket that has excellent heat resistance and adaptability due to the metal hoop and soft paper.

Forte

It can support a broad range of temperature changes and repeated loads due to spring action.
The roughness of 25S for the paper to adapt to the flange surface is just right.
Due to the heat-resistant paper, it can be used up to a high temperature range.
It is inexpensive.

Construction

It has a structure in which a V-shaped, thin metal hoop and NA paper are stacked and wound into a spiral shape and the start and end of the spiral is spot welded.

Manufacturers that use this product

Toyota Motor Corporation, Suzuki Motor Corporation, Mazda Motor Corporation, Isuzu Motors Limited.

Where it is used

Between an exhaust manifold to an exhaust pipe
Between an exhaust pipe and catalyst converter, muffler

Standard dimensions

Thickness (mm): 5.0
Size (mm): inside diameter = Φ30 to Φ85, outside diameter = Φ40 to Φ100

Specification

Specifications

TOMBO No.1824 CR VORTEX™
※CR: Centering

TOMBO No.1804 VORTEX™
*Conventional specifications

Features (Comparison with conventional specifications)
- Center alignment when assembling the flange is easy due to the protrusion on the inner diameter side, and the entire sealed surface can be compressed.
- It prevents degradation of the filler because the exhaust gas does not make direct contact with the sealed surface.
- The sealing width expands, thereby improving the sealing performance.

TOMBO is a registered trademark or trademark of NICHIAS Corporation.
Name of products with "®" are registered trademarks of NICHIAS Corporation.
Name of products with "™" are trademarks of NICHIAS Corporation.

TOMBO™ No. 1997 NA Jointing Sheet

NA joint sheet (water swelling)
TOMBO™ No. 1997
NA JOINTING SHEET
A water swelling type NA JOINT SHEET with excellent sealing performance against water at low surface pressure parts.

Forte

It swells appropriately in response to water.
It has excellent sealing properties against water at low surface pressure parts

Standard dimensions

Thickness (mm): 0.5, 0.8, 1.0, 1.5

Size (mm): 1524×1524

*Please contact us for other available thicknesses.

Corresponding standard

Equivalent to JASO M303, F412236.

TOMBO is a registered trademark or trademark of NICHIAS Corporation.
Name of products with "®" are registered trademarks of NICHIAS Corporation.
Name of products with "™" are trademarks of NICHIAS Corporation.

TOMBO™ No. 1914 NA Jointing Sheet

NA joint sheet (oil resistant)
TOMBO™ No. 1914
NA JOINTING SHEET
The oil-resistant type NA JOINT SHEET has a good balance of the three attributes of tensile strength, compression rate, and stress relaxation, and achieves a top-class seal to suit its excellent surface shape.

Forte

It has a good balance of three basic characteristics of tensile strength, compression rate, and stress relaxation rate.
(It has a relatively large tensile strength and compression rate and a low stress relaxation rate.)
It has excellent surface qualities.
It has excellent oil and antifreeze solution resistance.
It has excellent sealing performance against oil and antifreeze solution.

Standard dimensions

Thickness (mm): 0.5, 0.8, 1.0, 1.5

Size (mm): 1524×1524

*Please contact us for other available thicknesses.

Corresponding standard

Equivalent to JASO M303, F412240.

TOMBO is a registered trademark or trademark of NICHIAS Corporation.
Name of products with "®" are registered trademarks of NICHIAS Corporation.
Name of products with "™" are trademarks of NICHIAS Corporation.

TOMBO™ No. 1916 NA Jointing Sheet

NA joint sheet (oil swelling)
TOMBO™ No. 1916
NA JOINTING SHEET
A high-performance, oil-swelling NA JOINT SHEET that has excellent heat resistance and reliable long-term durability.

Forte

It swells appropriately in response to oil.
It has excellent sealing properties against oil at low surface pressure parts.
It demonstrates a low stress relaxation rate.
It has excellent flexibility after being heated.

Standard dimensions

Thickness (mm): 0.5, 0.8, 1.0, 1.5, 2.0

Size (mm): 1270 x 1270

*Please contact us for other available thicknesses.

Corresponding standard

Equivalent to JASO M303, F412660.