Uszczelniacz CORTECO 20026342 FPM B1BASLRSX2 Simmerring 100x125x13

High-performance sealing for crankshaft applications

FPM fluor elastomer advantages

Technical compatibility and OEM references

Main description

The CORTECO 20026342 FPM B1BASLRSX2 100x125x13 rotary shaft seal is a premium-grade oil seal ring engineered for reliable rotary sealing of crankshafts and other high-load rotating components. Constructed from advanced FPM (fluor-elastomer / fluor rubber), this seal delivers superior resistance to oils, fuels, greases and high temperatures, making it ideal for demanding automotive, industrial and machinery applications where high durability and stable sealing performance are essential.

Designed with a B1BASLRSX2 double lip configuration with dust lip, this shaft seal provides enhanced sealing efficiency compared to basic single lip designs. The primary sealing lip ensures effective containment of lubricants on the crankshaft interface, while the secondary dust lip protects the interior from dirt, moisture and abrasive particles — increasing longevity and minimizing maintenance needs in challenging environments. With dimensions 100x125x13, this rotary shaft seal fits a wide range of engines and drive systems. It is widely used in crankshaft sealing applications where technical sealing reliability matters, especially where exposure to aggressive automotive fluids and heat is routine. The optimized FPM elastomer maintains sealing integrity even under extended service cycles and elevated temperatures, offering improved resistance to thermal aging and chemical attack compared to standard rubber compounds. This oil seal is fully compatible with several OEM applications from leading vehicle manufacturers. It complements engine and transmission assemblies in BMW models and Land Rover vehicles, with OEM references covering part numbers commonly found in maintenance and repair contexts. Its precise design and material selection make it a reliable choice for both industrial machines and automotive powertrains requiring high performance rotary sealing.

Manufactured to exacting quality standards by CORTECO, this shaft seal offers a balance of durability, oil resistance and dimensional stability that meets the expectations of professional B2B customers working with critical mechanical systems.

FAQ - Frequently Asked Questions

What does FPM stand for in an oil seal?
FPM refers to fluor-elastomer (fluor rubber), a material renowned for excellent resistance to high temperatures, oils, greases and fuels.

What is the benefit of a double lip seal with dust lip?
Double lip seals provide superior sealing against lubricant leakage while the dust lip protects against external contaminants, extending seal life.

Where is this rotary shaft seal commonly used?
It is used for crankshaft sealing in automotive engines, drive systems and industrial machinery where high resistance to heat and oil is required.

How do I select the correct seal size?
Match the shaft diameter (100 mm), housing bore (125 mm) and width (13 mm) to your equipment’s specifications.

Is this seal suitable for long-term use under harsh conditions?
Yes, FPM fluor elastomer offers enhanced thermal and chemical resistance for extended service life in tough operating environments.