Shell Refrigeration Oil S2 FR-A 68 1*55 GAL DRUM

Shell Refrigeration Oil S2 FR-A - is a low miscibility compressor lubricant intended for use in refrigeration compressors using Ammonia refrigerant. It is formulated from specially refined paraffinic base oils in combination with additives selected to minimise system deposits and provide long service life

System Efficiency

• Optimized for systems requiring effective oil separation
• Reduces “light end” oil carryover
• Minimizes:
  • Oil thickening in compressors
  • Oil coating on evaporator surfaces
• Helps maintain overall system efficiency

Extended Maintenance Intervals

• Excellent oxidation and high-temperature stability
• Performs well under high compressor discharge temperatures
• Controls:
  • Sludge formation
  • Deposit buildup
• Enables longer oil drain intervals vs conventional mineral oils

Refrigerant Compatibility

• Recommended for:
  • Ammonia (R717) systems
  • Hydrocarbon refrigerants (e.g., propane R290)
• Performs reliably at:
  • High discharge temperatures
  • Evaporation temperatures down to -30°C
•  Not suitable for:
  • CFC / HCFC / HFC refrigerants (R12, R22, R134a)

Specifications & Approvals

• Meets DIN 51503 KAA and KE
• For full approvals, consult Shell Technical Helpdesk

Main Applications

• Suitable for refrigeration compressors:
  • Open, semi-hermetic, and hermetic types
• Used in:
  • Domestic
  • Commercial
  • Industrial refrigeration systems
• Compatible with:
  • Rotary and reciprocating compressors

Compatibility & Miscibility

Seal Compatibility

• Compatible with standard mineral oil sealing materials

Lubricant Compatibility

• Fully miscible with:
  • Mineral oils
  • Alkylbenzene oils
  • PAO oils

Typical Physical Characteristics

• ISO Viscosity Grade: 68
• Viscosity @ 40°C: 68 mm²/s
• Viscosity @ 100°C: 9 mm²/s
• Flash Point: 232°C
• Pour Point: -39°C
• Density @ 15°C: 862 kg/m³
• Standards: DIN 51503 KAA, KE
• Miscibility (R290): Completely miscible

Additional Information

• For specialized applications, consult your Shell representative