Our chemical film complies with MIL-DTL-5541F.
Because it is nearly clear, Type II film is difficult to detect visually. Painted or unpainted, Class 1A offers maximum protection against corrosion.
Also nearly clear, Class 3 film protects against corrosion while meeting low electrical resistance requirements.
At this time, Sapphire Metal Finishing does not offer Type 1 chemfilm because of the health risks and hazardous pollutants generated by the process.