Scania Hub Oilseal part 1393331

Description

Scania Hub Oilseal part 1393331 is a shaft/differential oil seal ring designed for use on Scania trucks and buses, particularly for sealing rotating shafts in the rear axle or differential housing. Here’s a detailed breakdown:

What It Is & Where It Fits

A shaft seal ring, often referred to as an oil seal, used to retain lubricant and prevent leaks in the differential or gearbox shafts of Scania vehicles.

Commonly installed on the rear axle flange or differential output shafts in Scania 4-Series, as well as P, G, R, and T series models .

Dimensions & Materials

Inner Diameter (ID): ~85 mm

Outer Diameter (OD): ~105 mm

Width/Thickness: 12–18 mm (typically 13/18 mm cassette style).

Made from FPM (Viton) or equivalent fluoroelastomer, suitable for high-temperature and oil exposure environments.

Compatibility & OEM References.

Scania Hub Oilseal part 1393331,1502384, 1380160, 1300974. Compatible with multiple Scania transmission/differential models (e.g., GR801/GR801R/GR875/GR875R/GRS890… through GRSH900R) .

Function & Importance

Forms a tight seal around rotating shafts to retain gear oil in differentials or gearboxes.

Prevents contamination—such as dirt and water—from entering sensitive components.

Made of durable elastomer and spring-loaded lip to ensure long-term sealing at high RPM and temperatures.

Installation Tips

Ensure the shaft and housing bore are clean and smooth; no burrs.

Install square and flush, using a suitable driver tool to avoid lip or spring damage.

Apply a thin coat of grease on the seal lip before installation.

After installation, check for leaks periodically, especially after the first few hundred kilometers.

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