TOYOTA 90310-T0006 Wheel Hub Oil Seal

This genuine Toyota (SKU: 90310-T0006) wheel hub oil seal (Type S Oil Seal) is a premium-quality rotary shaft seal specifically engineered to maintain and protect the reliable lubrication of wheel hub bearings. The genuine OEM part guarantees an exact fit, long service life, and maximum sealing efficiency even under the most demanding operating conditions.

Technical Features and Construction

• Type: Type S radial shaft seal with a dust lip, providing extra protection against external contamination.
• Material: High temperature- and wear-resistant elastomer (NBR or ACM), resistant to transmission oils, lubricating greases, and environmental factors.
• Design: Engineered with a reinforcing metal case or rubberized outer diameter to ensure stable, leak-free installation.
• Application: Wheel hub and axle shaft interfaces, where it ensures lubricant retention while preventing the ingress of water, dust, and road grime.

Role and Importance of the Wheel Hub Oil Seal

The primary function of the oil seal is to retain the wheel bearing lubricant and isolate it from the external environment. In the absence of proper sealing, bearing grease rapidly escapes, causing metal-to-metal friction, overheating, and ultimately catastrophic wheel bearing failure. Furthermore, it protects precision bearing balls and rollers from abrasive dirt particles and corrosion-inducing moisture.

Typical Signs of Wear and Failure

• Leakage: Traces of oil or grease appearing on the inner side of the wheel, around the brake caliper, or on the brake drum.
• Damage: Visible cracks, hardened rubber, or a damaged sealing lip upon visual inspection.
• Bearing Noise: If the seal leaks and lubricant is lost, a humming, growling, or grinding noise can be heard from the wheel bearing while driving.

To maintain driving safety and protect more expensive chassis and running gear components, a damaged or aged oil seal should be replaced immediately, preferably with a genuine OEM part.