Mobil Rarus 829
Mobil Rarus 829 is part of the Mobil Rarus 800 Series, a range of high-performance synthetic air compressor lubricants primarily intended for severe-duty reciprocating air compressors. It is formulated using specially designed synthetic base oils and advanced additive technology to deliver superior equipment protection and reliability in applications where mineral oil-based lubricants may not meet performance requirements.
One of the key advantages of Mobil Rarus 829 is its outstanding oxidation and thermal stability. The formulation resists degradation at elevated temperatures, helping minimise sludge and deposit formation while supporting extended oil life and longer maintenance intervals. This helps maintain compressor cleanliness and improve operational efficiency.
Mobil Rarus 829 also provides excellent wear protection and load-carrying capability. It helps protect rings, cylinders, bearings and gears, ensuring reliable performance in compressors operating under severe conditions. This contributes to extended equipment life and reduced maintenance costs.
Another important benefit is its low ash and low carbon-forming characteristics. These properties help improve valve performance, reduce deposits in discharge lines and minimise the risk of fires and explosions within compressor discharge systems. This enhances safety and reliability in demanding applications.
Mobil Rarus 829 also offers excellent water separability and corrosion protection. The fluid helps reduce emulsion formation and carryover into downstream equipment while protecting system components from rust and corrosion. This supports improved compressor performance and longer equipment life.
Mobil Rarus 829 is recommended for single and multi-stage air compressors, particularly reciprocating compressors operating under severe conditions. It is suitable for cylinder and crankcase lubrication, compressor systems with gears and bearings and units operating at high discharge temperatures up to approximately 200°C.
Physical characteristics include ISO VG 150 viscosity grade with a kinematic viscosity of approximately 158 mm²/s at 40°C and 13.2 mm²/s at 100°C. Mobil Rarus 829 has a flash point of approximately 270°C, a pour point of approximately −33°C and a viscosity index of around 70. The product also demonstrates excellent rust protection and low foam tendency, supporting reliable performance in severe-duty compressor applications.
