Dongfeng Renault engine parts O-ring D5010224785 in stocked

Crafted from fluoroelastomer (FKM, commonly known as Viton), this O-ring delivers exceptional durability for Dongfeng Renault engine’s harsh operating conditions. FKM exhibits superior resistance to high temperatures (sustaining elasticity from -20°C to 200°C, with short-term tolerance up to 230°C)—critical for engine areas near exhaust manifolds or combustion chambers. Unlike standard nitrile (NBR) O-rings that harden or crack under heat, FKM maintains 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 breakage during engine vibration or assembly, ensuring long-term leak-proof performance

Designed to withstand exposure to all common Dongfeng Renault engine fluids, the O-ring’s FKM material resists degradation from engine oil (mineral or synthetic), coolant (ethylene glycol-based), fuel (gasoline/diesel), and lubricants. It avoids swelling (less than 5% volume increase after 1,000 hours of immersion in engine oil at 150°C) or hardening (Shore A hardness change ≤ 5 points) that plague low-quality O-rings. This chemical stability prevents fluid contamination (e.g., oil mixing with coolant) and maintains sealing effectiveness, even in engines with extended oil change intervals (up to 20,000 km). It also resists oxidation from air exposure, avoiding brittleness that leads to sudden leakage

The O-ring is engineered with a low compression set (less than 15% after 70 hours at 175°C, per ASTM D395 standards)—a critical property for maintaining consistent sealing pressure over time. Unlike O-rings with high compression set that lose elasticity and develop leaks after months of use, this FKM O-ring retains its shape and contact force against sealing surfaces. This ensures reliable sealing even as the engine undergoes thermal expansion/contraction cycles (common during startup and shutdown). The low compression set also reduces the need for frequent replacement, cutting maintenance costs and minimizing engine downtime for Dongfeng Renault truck owners

Engineered for hassle-free installation in repair shops or engine rebuilds, the O-ring features a smooth, burr-free surface that slides easily into sealing grooves—no specialized tools required. Its flexibility allows it to conform to minor surface irregularities in engine components, ensuring a tight seal even if grooves have slight wear. To guarantee performance, each O-ring is manufactured in an IATF 16949 certified facility and undergoes strict testing: dimensional verification via laser measurement, compression set testing, chemical immersion tests, and temperature resistance trials. It also complies with Dongfeng Renault’s engine quality standards (Q/DFL standards) and includes a 12-month warranty against manufacturing defects (e.g., material cracking, dimensional inaccuracies). This ensures the O-ring provides reliable sealing and protects Dongfeng Renault engines from costly leaks or component damage