CORTECO 12013404 25x37x7 FPM BA Radial Shaft Seal

Application - High-Performance Rotary Shaft Seal

The CORTECO 12013404 25x37x7 FPM BA is a premium radial shaft seal designed for demanding automotive and industrial applications. With dimensions 25x37x7 mm, this oil seal is commonly used as an engine seal, gearbox seal, and general rotary sealing solution in compact mechanical assemblies.

The BA design represents a single lip radial shaft seal with a reinforced metal outer case and elastomer sealing lip. It is suitable for shafts operating in both rotational directions, offering flexible installation in various mechanical systems. This rotary seal is particularly effective in environments where elevated temperature and chemical exposure are present.

FPM Material - Superior Chemical and Temperature Resistance

Manufactured from FPM (FKM, Viton), this technical seal offers significantly higher resistance to heat, oils, fuels, and aggressive media compared to standard NBR seals. It is widely selected for hydraulic and automotive seals operating in high-temperature environments.

The spring-loaded sealing lip maintains constant contact pressure against the shaft surface, ensuring reliable oil retention and reduced leakage risk. As a shaft sealing ring, it supports high durability and stable long-term performance in industrial applications.

The metal outer surface provides secure press-fit installation and dimensional stability within the housing bore, contributing to consistent sealing efficiency.

Technical Data

• Manufacturer: CORTECO

• Part number: 12013404

• Type: BA - Single lip radial shaft seal

• Dimensions: 25x37x7 mm

• Material: FPM FKM Viton

• Rotation direction: No predefined direction

• Outer case: Metal

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

FAQ - Frequently Asked Questions

What is the difference between FPM and NBR oil seals?
FPM offers higher temperature and chemical resistance, while NBR is suitable for standard operating conditions.

How do I select the correct shaft seal size?
The first dimension (25 mm) is the shaft diameter, the second (37 mm) is the housing bore, and the third (7 mm) is the seal width.

Is the BA design a double lip oil seal?
No. The BA type is a single lip oil seal designed for applications where additional dust protection is not required.

Where is FPM typically used?
In engines, transmissions, pumps, and industrial systems exposed to high temperatures or aggressive fluids.