Oil Seal RICH 55 x 88 x 11 ACM – High-Performance Rear Axle Sealing
OE Reference:
- MERCEDES-BENZ: 0139974346
- MERCEDES-BENZ: A0139974346
Technical Specifications:
- Catalog Code: 55 x 88 x 11 ACM RICH
- Brand: RICH
- Type: Oil Seal / Shaft Seal / Sealing Ring
- Fitting Position: Rear Axle / Inlet
- Inner Diameter (d): 55 mm
- Outer Diameter (D): 88 mm
- Height (h): 11 mm
- Material: ACM (Polyacrylate)
- Swirl Type: Right-hand Twist
- Dust Protection: Integrated Dust Lip
- Country of Origin: China
Key Performance Advantages:
- High-Temperature ACM Material: Formulated with ACM Polyacrylate (-30÷150°C) for superior thermal stability and resistance to specialized axle lubricants, preventing the seal from premature hardening in high-stress environments.
- Hydrodynamic Right-hand Twist: Features a precision swirl pattern on the sealing lip that actively pumps oil back into the axle housing during rotation, ensuring a leak-free interface on the 55 mm shaft.
- Advanced Dust Lip Protection: Equipped with a secondary dust lip to block the ingress of road debris, moisture, and dust, significantly extending the service life of the primary seal and internal bearings.
- Precision Rear Axle Inlet Fit: Specifically engineered for an interference fit in 88 mm Mercedes-Benz axle housings, providing high structural stability and resistance to vibrations.
- Mercedes-Benz Precision Compliance: Manufactured to match the exact technical standards of Mercedes-Benz reference 0139974346, guaranteeing a reliable factory-standard replacement.
Typical Applications:
- Rear axle inlet and differential sealing for Mercedes-Benz commercial and passenger vehicles
- High-load drivetrain assemblies requiring advanced hydrodynamic oil retention
- Transmission and axle systems operating under high-temperature conditions
Transparency Note: This product is manufactured under the RICH brand. All OE references, dimensions, and codes are provided strictly for identification and compatibility purposes and do not imply any affiliation, authorization, or endorsement by the referenced manufacturers.
