Mobil SHC Rarus 68 (55 Gal. Drum)
Created for severe-duty service, Mobil Rarus 68 is an ISO VG 68 supreme performance lubricant recommended for rotary screw and vane air compressors. This product is very effective in screw-type compressors with oil injection cooling, and compressors experiencing deposit formation, poor valve performance or oil degradation but not for air compressors used in breathing air applications. Mobil SHC Rarus 68 offers outstanding thermal and oxidation stability, as well as exceptional sludge and varnish control, keeping machinery clean and extending oil life. The high-performance synthetic base stocks and select additives enable reliable, effective lubrication in a wide temperature range. Mobil SHC Rarus 68 ensures superior wear, rust and corrosion resistance, plus demulsibility and foam control.
Mobil SHC Rarus 68 is a replacement for the discontinued Mobil SHC Rarus 1026.
Features
- Outstanding thermal / oxidation stability help to provide up to three times oil drain interval versus a leading synthetic compressor oil and reduce maintenance downtime
- Excellent varnish and sludge control helps to deliver cleanliness and extended compressor oil life
- High performance synthetic base stocks with high viscosity index enables wide temperature range capability and effective lubrication at high temperatures
- High load carrying capability protects equipment and extends life, helps minimize unexpected downtime and extend service periods
- Exceptional resistance to rusting and corrosion, very good antiwear, demulsibility, foam control and air release and multi-metal compatibility
- Excellent water separability helps reduce carryover to downstream equipment, reduce sludge formation in crankcases and discharge lines, helps reduce blockage of coalescers, coolers and less potential for emulsion formation
Applications
- Mobil SHC Rarus Series are primarily for rotary screw and vane air compressor, very effective in screw type compressors with oil injection cooling; compressors with a history of excess oil degradation, poor valve performance or deposit formation
- Compressors operating under severe conditions, particularly effective for continuous high temperature operation with discharge temperatures up to 200ºC
- Compressor systems with critical gears and bearings
- Not for air compressors used in breathing air applications
- Compatible with all metals used in compressor construction and with conventional mineral oil-based air compressor oils but mixture with other oils may detract from the total performance capability
Typical Properties
| Mobil SHC Rarus Series | 32 | 46 | 68 |
| ISO Viscosity Grade | 32 | 46 | 68 |
| Viscosity, ASTM D 445 | |||
| cSt @ 40ºC | 30.6 | 44.1 | 65.3 |
| cSt @ 100ºC | 5.6 | 7.1 | 9.7 |
| Viscosity Index, ASTM D 2270 , min | 123 | 122 | 129 |
| Color | Orange liquid | Orange liquid | Orange liquid |
| Copper Strip Corrosion, ASTM D130,24 h @ 100ºC | 1B | 1B | 1B |
| Rust Characteristics Proc B, ASTM D 665 | Pass | Pass | Pass |
| Pour Point, ASTM D 97, ºC, max | -42 | -42 | -39 |
| Flash Point, ºC, ASTM D 93 | 204 | 197 | 192 |
| Specific Gravity 15ºC/15ºC, ASTM D 1298 | 0.8779 | 0.8676 | 0.865 |
