Advanced Synthetic Refrigerator Compressor Lubricant. Shell Refrigeration Oil S4 FR-F is a synthetic refrigeration lubricant with a polyol ester base fluid. It has been developed for use with R134a and other HFC refrigerants.
Applications
Refrigerator CompressorsShell Refrigeration Oil S4 FR-F is recommended for use in open, semi-open and hermetic compressors in domestic, commercial and industrial refrigeration systems. It can be used in both rotary and reciprocating compressor types.
Refrigerant CompatibilityShell Refrigeration Oil S4 FR-F is recommended for use with R134a and other types of HFC refrigerant.
Seal CompatibilityShell Refrigeration Oil S4 FR-F is compatible with all sealing materials commonly used with HFC refrigerant systems.
Performance & benefits
Extended maintenance intervalsShell Refrigeration Oil S4 FR-F has excellent high temperature and oxidation stability providing long service life even where high compressor discharge temperatures are found.
Wear protectionShell Refrigeration Oil S4 FR-F has been designed to minimise the wear in bearings and pistons – the most critical parts of a reciprocating compressor.
Shell Refrigeration Oil S4 FR-F meets the requirements of DIN 51503 KD
Typical characteristics
Property
Typical value
Method
ISO viscosity grade
68
ISO 3448
Refrigerator Oil Group
KD
DIN 51503
Kinematic viscosity @40°Cmm2/s
66
ISO 3104
Kinematic viscosity @100°Cmm2/s
8.8
ISO 3104
Density @15°Ckg/m3
991
ISO 12185
Flash point (COC)°C minimum
230
ISO 2592
Pour point°C
-42
ISO 3016
Neutralisation numbermg KOH/g
(TAN) 0.06
ASTM D664 maximum
Characteristics when used with R134a - Floc- point°C maximum
-30
DIN 51351
Characteristics when used with R134a - Refrigerant Stability @250°Cminimum
96
DIN 51393
Complete documentation
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