Do you coat the compression gaskets that go under the EPR suction fitting and the discharge tube muffler assembly (these are the fittings that bolt on the front and back of the RV2 compressor) before bolting them on the compressor and if so with what? the one on my old compressor were a steel shim type and the gaskets that came with my rebuilt compressor are a fiber type...

also on the EPR fitting there is a spring under the gasket and on the discharge tube one there is an O-ring?

Thanks in advance. hoping to get my AC reconnected and running again after a few years of being apart.