Freudenberg Simmerring B2 U7 Radial Shaft Seal, 180x210x15mm NBR

Description

The Freudenberg Simmerring B2 U7 is a high-performance radial shaft seal designed for reliable sealing in a wide range of industrial applications. Manufactured from durable 72 NBR 902 compound, this seal provides excellent resistance to mineral oils and greases. Its B2 design features a metal outer casing for a secure press-fit, while the U7 profile includes a protective dust lip to prevent ingress of external contaminants, enhancing the longevity of machinery components. The spring-loaded sealing lip ensures consistent pressure on the shaft for optimal performance.

Specifications

• Manufacturer: Freudenberg
• Product Type: Simmerring Radial Shaft Seal
• Model: B2 U7
• Dimensions (d1 x d2 x b): 180 x 210 x 15 mm
• Material: 72 NBR 902 (Nitrile Butadiene Rubber)
• Design: Metal-cased with spring-loaded sealing lip and dust lip

Label Info

• Article Number: 0040411028
• Cure Date: 28.05.2018

Application

Ideal for sealing rotating shafts in gearboxes, pumps, motors, and other general machinery where protection against fluid leakage and dust ingress is critical.

Country of Origin

Made in the Czech Republic (CZ).

CO2 Impact

By purchasing this remanufactured component, you are contributing to a circular economy and helping to avoid approximately 0.8 kg of CO2 emissions compared to producing a new one. This saving is equivalent to charging a standard smartphone 96 times.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

According to standards like DIN 7716, NBR (Group B) seals have a recommended shelf life of 7 years under proper storage conditions (cool, dry, dark, ozone-free). While this seal may still be functional, it is approaching the end of its recommended shelf life and should be inspected before installation.

The 'U7' designation in Freudenberg's nomenclature typically indicates a design with an additional dust lip (Schutzlippe). This lip faces outwards and protects the primary sealing lip from dust, dirt, and other external contaminants, making it suitable for harsher environments.

The 'B2' design features a metal outer casing that provides a rigid and secure fit in the housing bore. This ensures proper alignment and prevents the seal from dislodging under pressure or vibration, making it a robust and reliable choice for many standard industrial applications.

Last Update: March 13, 2026

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