Compressor oil and hoses
Compressor oil and hoses |
Hoses, pipes and O-rings |
The pipes and hoses in the A/C system must pass very stringent requirements with respect to tolerance to heat and pressure. They must also pass requirements for sealing characteristics against leaks and, for hoses, diffusion. Diffusion indicates when refrigerant leaks out through the material. Therefore, use only pipes and hoses specially manufactured for the A/C system.
In order to meet these requirements, the hoses have an inside made of butyl rubber and an outside of EPDM-rubber. The hoses are also provided with heat protection on exposed sections.
The O-rings are manufactured of a special hydrated nitril rubber. They must be lubricated using synthetic vaseline before being mounted in the A/C system. Always use new O-rings when installing A/C system components.