Silicone rubber bell packings and bell-less packings with excellent heat resistance are used at the top of the blast furnace.
Here and ThereMUTSUBISHI Rubber
STEEL MANUFACTURE
We supply heat-resistant oil seals and dust seals for the rotating shafts of steelmaking facilities.
Our unique "plane-touch seal" shape maintains excellent sealing performance in severe environments and contributes to extending maintenance periods.
Blast furnace
Continuous caster
Rolling Mill
LANCE（SONDE） SEAL
Shaft gas samplers inserted into the blast furnace are sealed with a tube seal to prevent leakage of blast furnace gases.
MEGA-BALLOON（Large diameter balloon ）
In coke plant facilities, a balloon is used to temporarily shut off gas when repairing aging valves.
HEXA SEAL（OIL-SEAL for CC）
We offer materials suitable for sever environments and seal types for different lubrication systems(grease or oil-air).
HEXA SEAL（DUST-SEAL for CC）
The thick seal lip tightens the shaft and shuts out the dust by the shape of its exclusion angle.
MV-JOINT
This flexible joint is connected to the cooling water piping of the mold vibration device and absorbs fine shaking.
PROP SEAL
Flange seals that do not fall off during pipe flange removal operations due to the retaining force of the Prop-ring.
HEXA SEAL（OIL-SEAL for Rolling mill）
The originally designed plane surface contact seal (Plane-touch seal) reduces shaft abrasion and extends service life.
HEXA SEAL（DUST-SEAL for Rolling mill）
SCALE SEAL
Suitable for both thrust and radial types, protecting bearings from water and scale.
HEXA SEAL（SPLIT SEAL）
Even if the equipment cannot be disassembled and remove the shaft, this splitable seal can be installed.
ＳＷＩＰＳ（Wiper）
The heat-resistant and abrasion-resistant rubber easily fits to roll crowns, and the spring mechanism automatically follows roll dimension changes.
SHIP BUILDING
Our O-rings for diesel engines have excellent compression set characteristics due to our original compounding,
and we globally market Expansion Dome Seals for LNG carriers and balloons for safety valve maintenance, which are certified for five major ship classes.
Ship Building
EXPANSION DOME SEAL
Absorbs the displacement between the tank and the hull during navigation of LNG and LPG vessels and holds the gas pressure.
ISOLATION BALLOON Type-Ⅱ
Temporary isolation between tank and safety valve during the valve maintenance.
SCUPPER PLUG
The plugs are installed in upper deck drains and oil pan drain holes when the vessel is in port.
SHIP BOTTOM PLUG
The plugs are installed by the diver. It allows maintenance of valves in the sea chest when the vessel is at sea.
O-RING
Specially formulated O-rings with excellent heat resistance and compression set characteristics contribute to longer service life of diesel engines.
RUDDER SEAL
The oil-seals and seawater-seals for the shaft of a steering wheel（Rudder stock）. The seals can be replaced without removing the shaft.
INDUSTRIAL MACHINERY
The sealing technology continuously support production equipment and unseen areas of machinery in various industries.
A wide variety of our dust seals are used in tunneling and shield machines.
We also supply anti-vibration rubber for railway tracks, which contributes to reducing vibration and noise.
Shield machines
Railway
TUBE SEAL
Tube seals can be used to make doors airtight.
TREADS and JOINTS
Rubber treads are used on the station platforms, and expansion joints are used at the joint part of elevated railways.
SLEEPER PADS
Vibrationproof rubber with a linear spring-constant (natural frequency does not change even when the load changes) that highly absorbs vibration and sound.
SEALS for ROTARY JOINT
Floating-seals are dust seals for eccentricity that combine radial and thrust sealing.
SEALS for MAIN BEARING
Large-diameter, excellent pressure-resistant dust seals can be manufactured to fit TBMs.
EMERGENCY SEAL
The emergency seal installed at the tail of the TBM and operated in case of water leakage from the tail to prevent flooding coming inside the machine.
Tail inside shape Keeping System（TKS）
The system maintains the shape of the assembled segment in the TBM tail in a circular form.
SEALS for ARTICULATION
VD seals and Slide-seals ensure sealing performance of TBM articulation.
SEALS for SCREW CONVEYOR
VD seals protect the bearings of screw conveyors as dust seals for high pressure and peripheral speeds.
CIVIL ENGINEERING
Our company provides safety measures for important infrastructure facilities with watertight doors and other flood prevention products in preparation for natural disasters.
Tube-pressurized Entrance Seal Equipment for tunnel construction are used not only in Japan but also all over the world.
Civil Engineering
HEXA PLUG Style-O
Used as a temporary plug when backfilling pipelines during pipe laying work to prevent foreign substances such as earth, sand, and groundwater from intrusion with the pipeline.
HEXA PLUG Style-WSV
The watertight plug with valve can also be assembled with metal fittings so that it can be used under the manhole.
SHELL COVER
Watertight cover to prevent flood damage from ground openings. The sliding opening/closing system requires no heavy machinery to open and close.
SEAL COVER
Water sealing device to prevent flooding damage from wall-penetrating piping sections. It can also absorb displacement during earthquakes.
ENTRANCE SEAL（RIPP）
This is a sealing equipment for TBM launching. The tube pressure type provides excellent water sealing performance.
FLEX RUBBER SEAL（Type-Ω）
The flexible joints are installed at both ends of the TBM tunnel to protect the structure by absorbing displacement during earthquakes.
SHIELDOOR
Watertight door for internal and external pressure. Watertightness can be checked at any time after installation.
HEXA GATE PLUG（HGP）
This is the temporary watertight wall that can be assembled inside tunnels. It is used for temporary storage of rainwater trunk lines and as a safety measure for branch line connection work.
ENERGY
We supply functional products for specific application to thermal, hydro, nuclear, wind and other power plants, contributing to their safe operation. For gas and oil pipelines, our long-selling product, Hexa-Plug, are used for maintenance work.
Nuclear energy
Thermal power
Wind power
Oil
NOZZLE-PLUG
Plugging and sealing devices to ensure safe operation of the periodic inspection.
GASKET FOR GATE
Gaskets for gate used in fuel pools and D/S pits, available in hollow, solid and pressurized versions.
SEAL COVER(for high temperature piping)
As a sealing equipment to prevent flooding damage from wall penetration pipe sections, it can be used for high temperature pipes up to 300°C.
DUST-SEAL and OIL-SEAL
Various dust seals, oil seals and vibrationproof rubbers are used in mills (coal pulverizers).
DUST-SEAL
OIL-SEAL
TUB-BALLOON（Large section ballon）
Balloons with doors are used as an odor control measure during the removal of marine organisms from the intake and discharge channel.
OIL-SEALS and VIBRATIONPROOF RUBBERS
Large-diameter oil seals are used on the rotating shafts, while circumferential rubber absorbs the vibrations of speed increasers and generators.
HEXA PLUG Style-G
The plug allows safe work during flange welding by preventing the release of residual oil and flammable gases.
HEXA-PLUG Style-F
The product is used for inspection of flange welding points. It allows the work compact without the entire pipe length to be pressurized.
PHARMACEUTICAL
In pharmaceutical production, leading technology is always required as a sealing mechanism.
The original product, the flection-type tube seal, is used for glove box doors, and provides safety through containment.
Glove box
Filling solid preparations into cans
BLAT（Band Less Air Tight）
This hermetic container system integrates the lid and tube seal into a single unit, enabling automatic opening and closing operations by a robot.
HEXA RTP（Rapid Transfer Port）
The system is transferring objects while keeping a sealed state, and can be easily opened and closed with one hand(Aseptic and containment).
TUBE SEAL
The flexion-type tube seal is an original shape that does not deform its surface during operation.
HEXA PORT COVER
(oval shape)
Inspection jigs to check gloves, with excellent workability and airtightness.