In the realm of HVAC&R, where temperature fluctuations and diverse operating conditions are the norm, selecting materials that harmonize seamlessly with refrigerants and oils is paramount. Polymers, known for their versatility, find extensive use in various components, but their compatibility with specific refrigerants is a critical factor in system performance.

Common Polymers and Refrigerants Pairings*:

1. Chloroprene (Neoprene):

• Chloroprene and Chlorofluorocarbons (CFCs): Neoprene demonstrates good compatibility with CFC refrigerants, making it suitable for applications involving older systems that still use these refrigerants. However, with the global phase-out of CFCs due to environmental concerns, Neoprene's compatibility with newer refrigerants becomes more critical.
• Chloroprene and Hydrochlorofluorocarbons (HCFCs) and Hydrofluorocarbons (HFCs): Neoprene generally exhibits good compatibility with HCFCs and HFCs, making it suitable for many modern refrigeration systems. It is commonly used in seals and gaskets within HVAC&R systems that utilize these refrigerants.
• Chloroprene and Hydrocarbons: Neoprene is not recommended for use with hydrocarbon refrigerants, as it may experience compatibility issues that could compromise its performance and integrity.

2. Hydrogenated Nitrile Butadiene Rubber (HNBR):

• HNBR and Hydrochlorofluorocarbons (HCFCs) and Hydrofluorocarbons (HFCs): HNBR is known for its excellent compatibility with HCFCs and HFCs. It is commonly used in HVAC&R applications where these refrigerants are prevalent, including seals and gaskets in compressors. Please note that HNBR is NOT compatible with R22 refrigerant.
• HNBR and Hydrocarbons: HNBR has good resistance to hydrocarbon refrigerants, making it a suitable choice for applications where these refrigerants are used. Its compatibility with hydrocarbons enhances its versatility in various HVAC&R systems.

3. Ethylene Propylene Diene Monomer (EPDM):

• EPDM and Hydrochlorofluorocarbons (HCFCs) and Hydrofluorocarbons (HFCs): EPDM exhibits good compatibility with HCFCs and HFCs, making it a popular choice for refrigeration applications where these refrigerants are in use. It is often utilized in O-rings and gaskets.
• EPDM and Ammonia (NH3): EPDM is generally compatible with ammonia refrigerant, making it suitable for certain industrial refrigeration systems that utilize ammonia as a refrigerant.
• EPDM and Hydrocarbons: EPDM is not recommended for use with hydrocarbon refrigerants, as it may experience compatibility issues that could affect its performance and longevity.

Please reach out to us to get the most suitable solutions for your HVAC&R system.

* Considering the wide range of operating conditions and applications, the customer is responsible to conduct their own testing to ensure performance and safety requirements.