Parylene Coating Services, Inc. (PCS)

Parylene is a generic name for a unique family of polymers used as conformal coatings in protective applications.

The coating process exposes objects to the gas-phase monomer at low pressure. Through vacuum deposition, parylene condenses on the object's surface in a polycrystalline fashion, providing a coating that is truly conformal and pinhole free.

Compared to liquid processes, the effects of gravity and surface tension are negligible -- so there is no bridging, thin-out, pinholes, puddling, run-off or sagging. And, since the process takes place at room temperature, there's no thermal or mechanical stress on the object.

Parylene is physically stable and chemically inert within its usable temperature range. For example, in the presence of oxygen, parylene type "C" is stable from cryogenic (liquid nitrogen) temperatures to 125° C. Parylene provides excellent protection from moisture, salt spray, corrosive vapors, solvents, airborne contaminants and other hostile environments.