CORTECO 12014380 FPM B1BASL Radial Shaft Seal

Application - Engine and Industrial Rotary Shaft Seal

The CORTECO 12014380 radial shaft seal in B1BASL design is engineered for demanding automotive and industrial applications. It is commonly used as an engine seal and rotary shaft seal in Mercedes powertrain systems, corresponding to OEM numbers such as A0069978547, 0099979447, 0099976146, 0069978547 and 0069975446.

Designed for right-hand rotation, this oil seal optimizes lubricant return towards the sealed area when operating in the specified rotational direction. It is suitable for dynamic sealing in engines, gearboxes, and heavy-duty machinery where reliable oil retention and contamination protection are essential.

B1BASL Design - Double Lip Technical Seal with Dust Protection

The B1BASL construction represents a double lip oil seal with an additional dust lip. The primary sealing lip retains oil inside the system, while the secondary lip protects against external contaminants. This configuration significantly increases service life in industrial applications.

The outer surface features a metal-elastomer combination with a ribbed profile, ensuring secure press-fit installation and improved static sealing within the housing bore. As a shaft sealing ring, it provides stable performance even under dynamic load and elevated temperature conditions.

Manufactured from FPM FKM Viton, this technical seal offers superior resistance to oils and grease, fuels, and high operating temperatures compared to standard NBR seals. It is a preferred solution for hydraulic and automotive seals operating in severe environments.

Technical Data

• Manufacturer: CORTECO

• Part number: 12014380

• Full designation: B1BAVISLSFRDX7

• Type: B1BASL - Double lip radial shaft seal

• Material: FPM FKM Viton

• Rotation direction: Right-hand

• Outer surface: Metal-elastomer ribbed

• Application: Engine seal, gearbox oil seal, rotary sealing system

FAQ - Frequently Asked Questions

What is the difference between single lip and double lip oil seals?
A double lip oil seal includes an additional dust lip for contamination protection, increasing durability compared to a single lip design.

Why choose FPM instead of NBR?
FPM provides higher temperature resistance and superior chemical resistance to oils and aggressive media.

What does right-hand rotation mean?
It means the sealing lip geometry is optimized for shafts rotating clockwise when viewed from the front.

Where is this radial shaft seal typically used?
In automotive engines, transmissions, and industrial rotary systems requiring reliable oil sealing.