Dongfeng Renault engine parts Rear oil seal D5010295831 in stocked

Crafted from fluoroelastomer (FKM, commonly known as Viton), the seal’s main lip delivers exceptional sealing performance for Dongfeng Renault’s engine lubrication system. FKM exhibits superior resistance to high temperatures (maintaining elasticity from -20°C to 200°C, with short-term tolerance up to 230°C)—critical for the rear crankshaft area, which is exposed to heat from the exhaust system. Unlike standard nitrile (NBR) seals that harden, crack, or lose elasticity under heat, FKM retains its sealing integrity through 10,000+ hours of engine operation. The material also boasts high tensile strength (15 MPa) and tear resistance (25 kN/m), preventing deformation or damage from crankshaft vibration or axial movement, ensuring long-term leak-proof performance

The seal features a multi-lip structure with a primary sealing lip, secondary dust lip, and integrated garter spring—engineered to eliminate oil leakage and block contaminants. The primary lip (with a 30° contact angle) applies uniform pressure to the crankshaft’s surface, creating a tight seal that retains engine oil (up to 10 bar pressure) while accommodating minor crankshaft runout. The secondary dust lip blocks dirt, road debris, and moisture from entering the seal, preventing abrasion of the primary lip and extending its lifespan. The garter spring (made of corrosion-resistant stainless steel) maintains constant tension on the primary lip, compensating for wear over time and ensuring consistent sealing pressure. Unlike single-lip seals that fail quickly, this multi-layer design reduces oil leakage by 95% and extends the seal’s service life by 2–3 times

Designed to withstand exposure to all common Dongfeng Renault engine fluids, the FKM rubber resists degradation from engine oil (mineral or synthetic), coolant (ethylene glycol-based), and transmission fluid. It avoids swelling (less than 5% volume increase after 1,000 hours of immersion in 150°C engine oil) or hardening (Shore A hardness change ≤ 5 points) that plague low-quality seals. This chemical stability prevents oil contamination (e.g., coolant mixing with oil) and maintains sealing effectiveness, even in engines with extended oil change intervals (up to 20,000 km). The seal’s metal case (made of 08F steel with zinc plating) resists corrosion from road salt and moisture, ensuring structural integrity and preventing the seal from shifting in the engine block’s cavity

Engineered for hassle-free installation in engine rebuilds or repairs, the seal features a smooth, burr-free metal case that slides easily into the engine block’s sealing groove—no specialized tools required. Its outer diameter is precision-sized to create an interference fit with the block, ensuring secure retention without the need for adhesives. The seal’s lip is pre-lubricated with high-temperature grease, reducing friction during initial crankshaft rotation and preventing lip damage. To guarantee performance, each seal is manufactured in an IATF 16949 certified facility and undergoes strict testing: dimensional verification via laser measurement, pressure leakage testing (up to 15 bar), temperature resistance trials, and chemical immersion tests. It complies with Dongfeng Renault’s engine quality standards (Q/DFL specifications) and includes a 18-month warranty against manufacturing defects (e.g., lip tearing, metal case corrosion, or dimensional inaccuracies). This ensures the seal provides reliable oil retention and protects Dongfeng Renault engines from costly damage caused by oil leaks