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104848

MOBIL RARUS 427 (PAIL)

SKU# 104848

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$109.35

Quick Overview

The Mobil Rarus™ 400 Series is a line of premium performance ashless air compressor lubricants designed to meet the stringent requirements of the major compressor manufacturers. They are formulated with high quality mineral base-oils and a high performance additive system designed to provide exceptional equipment protection and reliability for compressors operating under mild to severe conditions. They provide excellent wear protection and the ability to reduce maintenance costs through minimising equipment problems and downstream deposits and carryover. Because of their high FZG Ratings, the Mobil Rarus 400 Series make outstanding lubricants for compressor systems employing gears and bearings making them an excellent selection for crankcases as well as cylinder lubricants.

PDS/MSDS

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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