Raj Petroleum Products Ltd supplies Semi-Synthetic Refrigeration Compressor Oils. Raj Petroleum Products Ltd is an ISO 9001:2000 certified company. Semi-Synthetic Refrigeration Compressor Oils are derived from highly refined mineral and synthetic base oils including oils designed for compatibility with conventional as well as alternative R134a refrigerant systems. They are superior quality refrigeration compressor oils formulated from highly refined, low pour point base oils and selected synthetic components. These oils exhibit excellent low temperature behaviour and good solubility with common refrigerants. The Semi-Synthetic Refrigeration Compressor Oils are recommended for all types of CFC/HCFC and ammonia refrigeration systems as well as low temperature R22 systems. They are available in viscosity grades ISO VG 32, 46 and 68. ISO VG 46 and 68. Semi-Synthetic Refrigeration Compressor Oils can also be used in hermetically sealed and semi-sealed compressors.