ELRING 277.525 - rotary shaft seal 45x72x15

Engine and drivetrain applications

NBR material - oil resistance and durability

Technical fit and reliable rotary sealing

ELRING 277.525 is a high-quality rotary shaft seal (oil seal) designed for reliable rotary sealing in automotive and industrial applications. Manufactured by Elring, this seal is widely used where long service life, dimensional accuracy and resistance to operating media are critical for system reliability.

The seal features dimensions 45x72x15 mm and is produced from NBR (nitrile butadiene rubber), a proven elastomer known for its excellent resistance to oils and grease, mineral oils and standard lubricants. Thanks to these properties, ELRING 277.525 performs effectively as an oil seal in engines, gearboxes and drivetrain components, where continuous shaft rotation and stable sealing are required.

Its radial design ensures consistent contact between the sealing lip and the shaft, supporting effective shaft sealing while minimizing friction and wear. As a technical seal, it helps retain lubricants, prevent leakage and protect internal components from contamination. The robust construction supports stable operation across a wide range of operating conditions, making it suitable for both OEM and maintenance applications.

ELRING 277.525 is commonly classified as a single lip oil seal, optimized for applications where sealing efficiency and durability are prioritized. It is frequently selected by professional B2B customers in the automotive and industrial sectors who require dependable sealing solutions with predictable performance.

FAQ - frequently asked questions

What are the dimensions of ELRING 277.525?
The seal has dimensions 45x72x15 mm.

Which material is used in this rotary shaft seal?
It is made from NBR, offering very good resistance to oils and lubricants.

Where is this oil seal typically used?
In engines, gearboxes and drivetrain systems in automotive and industrial machinery.

What is the difference between single lip and double lip oil seals?
A single lip oil seal retains the working medium, while a double lip oil seal also protects against external contamination.

How do I select the correct rotary shaft seal?
Match the inner diameter to the shaft, the outer diameter to the housing, and the width to the installation space.