Elring 354.090 Seal Ring

Elring 354.090 Seal Ring

The Elring 354.090 Seal Ring is a high‑performance sealing component designed for the rear crankshaft oil seal application in heavy‑duty and commercial vehicles. It is engineered to provide reliable, long‑lasting protection against oil leakage while withstanding extreme operating conditions such as high temperatures, pressure fluctuations, and abrasive contaminants.

Key Features

• Material Composition: Constructed from a blend of PTFE (polytetrafluoroethylene) and ACM (polyacrylate rubber). This combination delivers exceptional chemical resistance, low friction, and excellent temperature tolerance.
• Design Geometry: The ring features a precisely machined profile that ensures optimal contact with the crankshaft flange and housing. Its tapered inner diameter accommodates slight variations in shaft dimensions while maintaining a tight seal.
• Durability: Engineered for extended service life, the seal resists wear from oil flow and particulate matter, reducing maintenance intervals.
• Compatibility: Fits a wide range of OEM applications including Mercedes‑Benz Vario buses, MAN TGA/TGS trucks, Bharatbenz heavy‑duty engines, and other commercial vehicle platforms that specify the 354.090 part number.
• Installation Ease: Designed for straightforward installation with standard tools, minimizing downtime during service.

Applications

The Elring 354.090 Seal Ring is specifically tailored for the rear crankshaft oil seal position in engines where reliable sealing of the crankshaft is critical. Common vehicle families and engine types that utilize this component include:

• Mercedes‑Benz Vario buses, vans, and dump trucks (various OM series)
• MAN TGA/TGS heavy‑duty trucks
• Bharatbenz commercial engines
• Freightliner and Fuso chassis with compatible powertrains
• Mitsubishi, Setra, and other European commercial vehicle manufacturers that adopt the 354.090 specification

Technical Specifications

Performance Benefits

The combination of PTFE and ACM materials grants the Elring 354.090 Seal Ring several performance advantages:

• Low Friction: Minimizes wear on both the seal and surrounding components, extending service life.
• High Chemical Resistance: Maintains integrity in the presence of engine oils, additives, and potential contaminants.
• Temperature Stability: Retains sealing capability across a wide temperature spectrum, preventing leaks during hot start‑up or high‑load operation.
• Load Distribution: The engineered profile ensures even pressure distribution against the crankshaft flange, reducing localized stress and potential failure points.

Installation Guidelines

1. Ensure the crankshaft flange and housing are clean and free of debris or old seal material.
2. Align the seal ring with the mounting groove on the crankshaft flange, taking care to match the correct orientation if applicable.
3. Gently press the seal into place using a suitable tool (e.g., a seal driver) to avoid damaging the PTFE/ACM material.
4. Verify that the ring sits flush with the housing and that no gaps remain between the seal and surrounding surfaces.
5. Re‑assemble any removed components, ensuring proper torque specifications are followed for all fasteners.

Maintenance & Inspection

Regular inspection of the rear crankshaft oil seal area is recommended during routine service intervals. Look for signs such as:

• Oil leakage around the crankshaft flange or housing
• Visible wear, cracks, or deformation in the seal ring
• Accumulation of debris within the sealing groove

When any of these indicators are present, replace the Elring 354.090 Seal Ring promptly to prevent engine damage and maintain optimal performance.

Conclusion

The Elring 354.090 Seal Ring represents a reliable, high‑quality solution for rear crankshaft oil sealing in commercial and heavy‑duty vehicle engines. Its advanced material blend, precise engineering, and broad compatibility make it an essential component for maintaining engine integrity, reducing maintenance costs, and ensuring long‑term operational reliability.