Elring 745.720 Differential Seal

Elring Differential Seal for Mercedes-Benz Models

The Elring 745.720 differential seal is engineered for reliable sealing performance in various Mercedes-Benz vehicles. Designed with durable Acm (polyacrylate) material, this seal ensures effective protection against leaks in the driveline system.

• Material: Acm (polyacrylate) for enhanced durability
• Inside Diameter: 40.0 mm
• Outside Diameter: 70.0 mm
• Height: 15 mm; Height 2: 11 mm
• Radial Shaft Seal Design: A/b with swirl type Rd
• Compatible with multiple Mercedes-Benz models including 300D, 300SE, 380SL, and 560SEL
• Alternative repair kit available: 152.940
• Designed without dust lip for specific applications

Technical Details and Material Specifications

This differential seal is constructed from Acm (polyacrylate), a material known for its resistance to heat, oil, and wear, making it suitable for demanding automotive environments. The seal features an inside diameter of 40.0 mm and an outside diameter of 70.0 mm, with a total height of 15 mm and an additional height measurement of 11 mm to fit precise differential housings. The radial shaft seal design classified as A/b and swirl type Rd ensures optimal sealing performance by maintaining tight contact with the shaft while accommodating rotational movement.

Compatible Mercedes-Benz Models

The Elring 745.720 differential seal is compatible with a range of Mercedes-Benz vehicles, including the 300D, 300SE, 300SEL, 300TD, 380SE, 380SEC, 380SEL, 380SL, 380SLC, 420SEL, 500SEL, and 560SEL. This compatibility ensures that the seal meets the specific requirements of these models’ driveline and axle systems.

Common Applications and Problem Resolution

• Prevents differential oil leaks that can cause driveline damage
• Maintains proper lubrication within the differential assembly
• Reduces contamination ingress by sealing the differential housing
• Helps avoid premature wear of differential components
• Supports smooth operation of the driveline system in Mercedes-Benz vehicles

Installation Notes and Tips

When installing the Elring 745.720 differential seal, ensure the sealing surface and shaft are clean and free of debris. Use appropriate tools to avoid damaging the seal during installation. Verify the seal orientation matches the radial shaft seal design A/b specifications. It is recommended to inspect the differential housing for wear or damage before fitting the new seal. Lubricate the seal lip lightly with compatible oil to facilitate installation and initial operation.

Quality Assurance and Warranty

Elring manufactures the 745.720 differential seal to meet stringent quality standards, ensuring reliable performance in Mercedes-Benz driveline systems. The use of Acm (polyacrylate) material contributes to the seal’s durability and resistance to automotive fluids. While specific warranty details are not provided, Elring products typically adhere to industry quality controls and are designed for long service life under normal operating conditions.