CORTECO 12014825 ACM Rotary Shaft Seal 29.8x50x10/13.5 - Differential Oil Seal

The CORTECO 12014825 ACM B1BASLSFRDX7 is a high-performance rotary shaft seal (simmerring) engineered for differential shafts and drive systems exposed to temperature fluctuations, dust, and oil immersion. Manufactured from ACM (polyacrylate rubber), this seal provides excellent resistance to heat, oil, and mechanical wear.

It is equipped with a secondary dust lip that enhances contamination protection, extending the service life of the bearing and the entire drivetrain assembly. Designed for precise fit and long-term reliability, it is widely used in vehicles by Alfa Romeo, Fiat, Lancia, Peugeot, SEAT, and Carraro, where durability and tight sealing are critical.

This oil seal ensures stable operation within bearing housings or bearing units, protecting the internal ball bearing or roller bearing from lubricant loss and external contamination. It meets strict OEM standards, offering performance equivalent to the original part.

Application and Compatibility

• Designed for differential and drive shafts, ensuring reliable sealing of transmission components.

• Common OEM replacements include:

  • ALFA ROMEO - 164001721800, 40003040, 40004760, 55227627, 55231144, 60806675, 71738498, 71738502

  • FIAT - 40003040, 40004760

  • LANCIA - 40003040, 40004760, 82361207

  • PEUGEOT - 312168

  • SEAT - 40003040

  • CARRARO - 138343

• Dimensions: 29.8 mm (ID) x 50 mm (OD) x 10/13.5 mm (width).

Its geometry ensures stable sealing in industrial applications and automotive drivetrains, even under variable loads and vibration.

Advantages and Technical Specifications

• Material: ACM (polyacrylate rubber) - excellent resistance to heat, oil, and oxidation.

• Type: B1BASLSFRDX7 - with integrated dust lip for enhanced protection.

• Metal reinforcement provides dimensional stability and secure fit in the bearing housing.

• Temperature range: −25 °C to +150 °C (short peaks up to +170 °C).

• Friction-optimized design minimizes wear on shaft surfaces and extends bearing life.

• Suitable for ball bearing units, bearing housings, and transmission assemblies.

• Ensures high durability and reduced maintenance frequency in demanding B2B applications.

This seal’s dual-lip configuration makes it ideal for environments with oil splash, dust, or thermal cycling, ensuring long-term protection and operational efficiency.

Installation and Bearing Housing Integration

For proper installation, press the seal evenly into its housing bore, avoiding misalignment or deformation. Lubricate the sealing lip and shaft surface with compatible grease before assembly to prevent dry friction.

In bearing units, the seal should face the lubricant side, while the dust lip should face outward to block contaminants. When combined with a ball bearing, it preserves lubrication integrity, extending the component’s lifespan.

Regular inspection during maintenance cycles is recommended — replacing the seal at early signs of leakage ensures continued system efficiency and avoids premature bearing wear.

FAQ

1. Is CORTECO 12014825 compatible with my vehicle?
Yes, it fits various Alfa Romeo, Fiat, Lancia, Peugeot, SEAT, and Carraro models. Check your OEM reference or shaft dimensions (29.8x50x10/13.5 mm) for confirmation.

2. What material is this seal made from?
It is made of ACM (polyacrylate rubber) - highly resistant to oil, heat, and mechanical stress.

3. What does the type B1BASLSFRDX7 mean?
It refers to a construction with a single sealing lip, metal reinforcement, and an additional dust lip for superior external protection.

4. Can this seal be used in industrial applications?
Absolutely. It’s suitable for both automotive and industrial bearing housings exposed to oil and dust.

5. Is it available for immediate shipping?
Yes - this product is stocked in our warehouse and shipped within 24 hours across Poland and the EU.