Parker 475403 Polyolester Refrigeration Oil 68 Iso

Product Description

The PARKER 475403 is a polyol ester (POE) refrigeration oil formulated to ISO 68 viscosity grade. It is designed for use in refrigeration and air conditioning compressors that require a synthetic lubricant compatible with HFC and HCFC refrigerants. The 475403 ships in a 1-gallon container and carries a viscosity of 300 SUS. POE oils are hygroscopic and must be handled carefully to limit moisture exposure during service. Licensed HVAC and refrigeration technicians are the primary installers and service professionals who work with this product.

This oil is suited for residential and light commercial refrigeration systems, including hermetic and semi-hermetic compressor applications where the equipment manufacturer specifies a polyol ester lubricant at ISO 68 viscosity. It is commonly used during compressor replacements, system retrofits, and scheduled oil changes in refrigeration circuits operating with HFC refrigerants such as R-134a, R-404A, and R-410A. Always verify the compressor OEM specification before selecting a lubricant grade.

Key Features

• Polyol ester (POE) base stock — compatible with HFC and HCFC refrigerants
• ISO 68 viscosity grade, 300 SUS — suitable for a range of compressor operating conditions
• 1-gallon container — appropriate for single-compressor fills and small system service
• Synthetic formulation provides good thermal and chemical stability in refrigeration circuits
• UNSPSC Code 15121500 for procurement and catalog classification

Compatibility

Designed as an OEM-style synthetic refrigeration lubricant for use in compressors that specify a polyol ester base oil at ISO 68 viscosity. Verify compatibility with the compressor manufacturer before use.

Installation Notes

Refrigeration oil service should be performed by a licensed HVAC or refrigeration technician following EPA Section 608 requirements. Recover all refrigerant before opening the system. POE oil is highly hygroscopic — keep the container sealed until the moment of use and minimize air exposure during filling. Use clean, dedicated equipment to avoid cross-contamination with mineral or alkylbenzene oils.