Thin Parylene film is a pure, polycrystalline and amorphous linear polymer distinguished by superior dielectric, gas barrier and mechanical properties, giving it the ability to meet coating requirements in very thin layers (also see Parylene Specifications).

Because the Parylene process does not include a liquid phase, the coating will not pool in low areas, bridge across substrate features, or exhibit liquid properties such as meniscus or capillary action. Parylene film has low static and dynamic coefficients of friction, giving it dry film lubricity that can be valuable for some applications.

The nature of the film and its room-temperature deposition process allows Parylene to be used on many substrates, including ferrites, rubbers, silicone elastomers, paper, resins, plastics, silicon, metals and even on granular materials. Since Parylene is highly effective in very thin coatings, delicate substrates such as electronic sensors or diaphragms can be protected without significant mechanical or loading effects.

Since Parylene coating does not cure in the conventional manner, substrates are not subjected to cure stress, elevated temperatures or solvents. The automated Parylene vacuum deposition coating process lends itself to precise quality control measures.