Oil seals for cars
The Optimal Oil Seal for Each Car Component
At JTEKT, we set seals according to the required functions for each car component. By designing the optimal seal for each usage area based on logical analysis, and selecting/formulating the optimal materials, we are improving sealing performance and achieving low-friction torque.
Engine
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Crankshaft front seal
- • Super helix seal (seal with one-way two-step screw)
- • Low-friction torque design
- • Fluorine rubber
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Crankshaft rear seal
- • Super helix seal (seal with one-way two-step screw)
- • Low-friction torque design
- • Fluorine rubber
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Plug tube gasket
- • High eccentricity-following lip shape
- • SIM method to prevent the spring from falling off (SIM: integral molding of spring and rubber)
- • Acrylic rubber
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Valve stem seal
- • Machining of lip surface (stable oil drip under pressure)
- • Fluorine rubber
Transmissions
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Front pump input seal
- • Super helix seal (seal with one-way two-step screw)
- • Acrylic rubber
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Friction damper
- • Rubber torque prevents gear rattling noise
- • Compact design
- • Fluorine rubber
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Bonded piston seal
- • Quick response (centrifugal hydraulic pressure canceling mechanism) throughout the rotation range
- • More compact thanks to the thin plate (uses a high-strength steel plate)
- • Hydrogenated nitrile rubber
Differential gears
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Differential gear pinion seal
- • Perfectly sealed (bidirectional threaded seal)
- • Design with side lips
- • Acrylic rubber
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Differential gear side output seal
- • Super helix seal (seal with one-way two-step screw)
- • Design with side lips
- • Acrylic rubber
Wheels
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Pack seal
- • Built into the bearing, and therefore compact
- • Low-friction torque design that maintains a high muddy water resistance
- • Nitrile rubber
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Half-rubber seal with side lips
- • Built into the bearing, and therefore compact
- • Low-friction torque design that maintains a high muddy water resistance
- • Half-rubber design allows both sealing and fitting force
- • Nitrile rubber
Oil seal kits for wheels
Kits for front wheels, kits for rear wheels, kit sets for both front and rear wheels
These products are kits including components that can be replaced simultaneously, such as lock washers, lock bolts, gaskets, split pins, and O-rings, as well as oil seals for wheels.
Steering system
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Dust seal
- • Design with low-friction torque and improved setting resistance
- • Seal structure preventing pileup of dust and muddy water
- • Nitrile rubber
