Mobil Rarus 427

Mobil Rarus 427 is a premium performance ashless air compressor lubricant designed to meet the stringent requirements of major compressor manufacturers. It is formulated with high quality mineral base-oils and a high performance additive system designed to provide exceptional equipment protection and reliability for modern compressors operating under mild to severe conditions in marine and industrial applications. It provides excellent wear protection and the ability to reduce maintenance costs by minimising downstream deposits and carryover. Because of its high FZG Ratings, Mobil Rarus 427 is an outstanding lubricant for compressor systems employing gears and bearings making it an excellent selection for crankcases as well as cylinder lubricants.

Mobil Rarus 427 exceeds the requirements of DIN 51506 VD-L standards and demonstrates a very high resistance to oxidation and deposit formation. It is recommended or approved by many of the leading compressor manufacturers.

 

Specifically designed for single and multistage reciprocating and rotary air compressors, they can be used for both crankcase and cylinder lubrication. Mobil Rarus 400 Series are made from specially refined mineral base oils and selected additives to give excellent thermal and oxidation stability to resist deposit formation on exhaust valves.

  • Rust protection with good load carrying ability and demulsibility
  • Longer valve cleaning intervals as a result of high resistance to deposit formation
  • Good inter-cooler and after-cooler efficiency due to resistance to emulsion formation
  • Lower operating costs as a result of long crankcase charges, due to high oil stabilityApplications
  • Mobil Rarus 427 is recommended for single and multistage air compressors in marine and industrial applications. It is particularly effective for continuous high temperature operation with discharge temperatures up to 150Ã?ºC. It is suitable for reciprocating air compressor crankcases and cylinders. Mobil Rarus 427 is recommended for units with a history of excess oil degradation, poor valve performance or deposit formation. It is compatible with all metals used in modern compressor construction and with mineral-oil compatible elastomers used in seals, O-rings and gaskets.
  • Mobil Rarus 427 is not intended or recommended for use in air compressors for breathing air applications.

 

Product Specifications:

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Product Data Sheet:

 

Product Specifications

ISO Viscosity Grade
100
Viscosity, ASTM D 445
cSt @ 40ºC 104.6
cSt @ 100ºC 11.6
Viscosity Index, ASTM D 2270 100
Sulfated Ash, wt%, ASTM D 874 ‹0.01
Copper Strip Corrosion, ASTM D130, 3 h @ 100ºC 1B
FZG Load Support, DIN 51534, Fail Stage 11
Rust Characteristics;
ASTM D665 B Pass
ASTM D665 A Pass
Foam Seq I, ASTM D 892 30/0
Flash Point, ºC, ASTM D 92 264
Density @ 15ºC, ASTM D 1298 0.879

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