Heavy Duty Protective Coating

General Description

MIL-C-16173 Grade 1 is an dark colored, high melting point, resilient coating designed to provide long term protection of metal surfaces. MIL-C-16173 Grade 1 is applied as a solution in a volatile solvent. The residual film, after solvent evaporation, is highly resistant to salt water and salt spray.

MIL-C-16173 Grade 1 is supplied ready to use to simplify handling and application of the product.


Performance Results

MIL-C-16173 Grade 1 Film Thickness Days to Fail
  Mils Microns Humidity Cabinet
on Polished Steel
5% Salt Spray
  3.50 88.9 60+ 45+



MIL-C-16173 Grade 1 can be applied by dipping the parts to be protected in a vat or spraying the parts to be protected with air sprayers, pump type sprayers or by pouring the product over the parts. Removal of protective films is accomplished by using a steam cleaner or washing the parts in mineral spirits.

Physical Properties

Appearance Thick, Dark Black Liquid
Odor Solvent Odor
Specific Gravity 0.85 - 0.90
Flash Point (minimum) 108º F
Low Temperature Flexibility -29ºC (-20ºF) Excellent

MIL-C-16173 Grade 1 meets following MIL-SPEC:

MIL-C-16173 Grade 1.


MIL-C-16173 Grade 1 is available in UN approved 5 gallon pail, 55 gallon drums and bulk quantities.


Observe warning label on containers. Normal precautions for industrial chemicals apply.

  pdf Mil-C-16173-Grade-1-PB (88 KB)