Mobil Rarus 427 (5 Gal. Pail)

SKU

XOM104848

$109.35

Designed for the stringent requirements of major compressor manufacturers, Mobil Rarus 427 is a superior ISO VG 100 ashless lubricant for use in single and multistage air compressors. Mobil Rarus 427 is intended for lubricating compressor systems employing gears and bearings, making them a great pick for crankcases and cylinders. The low ash and carbon formation of these products results in improved valve performance and reduced deposits in discharge lines, which means improved compressor performance overall, in addition to reduced safety concerns. Mobil Rarus 427 has a high load-carrying ability, which reduces wear on cylinders, rings, gears and bearings. This product also has exceptional water separability, which inhibits sludge formation, blockage and carryover to downstream equipment. Mobil Rarus 427 is especially effective for continuous high-temperature operation.

Product Data Sheet

Features

The use of the Mobil Rarus 400 Series oils can result in cleaner compressors and lower deposits compared to conventional mineral oils, resulting in longer running periods between maintenance intervals. Their excellent oxidation and thermal stability safely allow extended life capability while controlling sludge and deposit formation. They possess outstanding anti-wear and corrosion protection, which enhances equipment life and performance.

Features	Advantages and Potential Benefits
Low Ash and Carbon Formation	Improved valve performance Reduced deposits in discharge lines Reduced potential for fires and explosions in discharge systems Improved compressor performance
Outstanding Oxidation and Thermal Stability	Longer oil life Improved filter life Lower maintenance costs
High Load-carrying ability	Reduced wear of rings, cylinders, bearings and gears
Excellent Water Separability	Less carryover to downstream equipment Reduced sludge formation in crankcases and discharge lines Reduced blockage of coalescers Less potential for emulsion formation
Effective Rust and Corrosion Protection	Improved protection of valves and reduced wear of rings and cylinders

Applications

The Mobil Rarus 400 Series oils are recommended for single and multistage air compressors. They are particularly effective for continuous high temperature operation. The maximum compressed air temperature, according to DIN 51506, is 220 °C. They are suitable for reciprocating and rotary type machines with the lower viscosity grades mainly used in rotary compressors. Rarus 400 Series oils are recommended for units with a history of excess oil degradation, poor valve performance or deposit formation. They are compatible with all metals used in compressor construction and with mineral-oil compatible elastomers used in seals, O-rings and gaskets.

Mobil Rarus 400 Series oils are not intended or recommended for use in air compressors for breathing applications.

The following types of compressors have shown excellent performance with the Mobil Rarus 400 Series oils:

Reciprocating air compressor crankcases and cylinders
Rotary screw compressors
Rotary vane compressors
Axial and centrifugal compressors
Compressor systems with critical gears and bearings
Compressors used in stationary and mobile applications

Specifications

Mobil Rarus 400 Series meets or exceeds the requirements of:	424	425	426	427	429
DIN 51506 VD-L (1985-09)	X	X	X	X	X

Typical Properties

Mobil Rarus 400 Series	424	425	426	427	429
ISO Viscosity Grade	32	46	68	100	150
Viscosity, ASTM D 445
cSt @ 40º C	32	46	68	104.6	147.3
cSt @ 100º C	5.4	6.9	8.9	11.6	14.7
Viscosity Index, ASTM D 2270	105	105	105	100	100
Sulfated Ash, wt%, ASTM D 874	‹0.01	‹0.01	‹0.01	‹0.01	‹0.01
Copper Strip Corrosion, ASTM D130, 3 h @ 100º C	1B	1B	1A	1B	1A
FZG Load Support, DIN 51354, Fail Stage	12	11	12	11	11
Rust Characteristics; ASTM D665 B; ASTM D665 A	Pass	Pass	Pass	Pass	Pass
Foam Seq I, ASTM D 892	10/0	20/0	0/0	30/0	430/20
Flash Point, ºC, ASTM D 92	236	238	251	264	269
Density @ 15º C, ASTM D 1298	0.866	0.873	0.877	0.879	0.866