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MIL-PRF-16173

MIL-PRF-16173 is a military specification that outlines requirements for corrosion-preventive compounds (CPCs) used to protect metallic surfaces from corrosion. The specification covers various types of CPCs, including water-displacing, water-displacing and penetrating, and solvent-cutback types. These compounds are typically applied to metal surfaces by spraying, brushing, or dipping.

MIL-PRF-16173 specifies the performance requirements, testing methods, packaging, and labeling for corrosion-preventive compounds. It ensures that these compounds meet stringent military standards for protecting critical metal components and equipment from corrosion in a variety of environments, including storage, shipment, and operational conditions.

MIL-PRF-16173 Product List

These products either meet or are approved to the MIL-PRF-16173 specification. Please consult the product page and product description for the specific grade/size you intend to purchase to ensure it will be supplied with MIL-PRF-16173 paperwork.

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MIL-PRF-16173 Revisions and Versions

  • MIL-PRF-16173E - The latest revision of the MIL-PRF-16173 specification. This was amended twice, once in 2006 and then again in 2017. E was first established in 1993
    MIL - Military Specification  PRF - Performance Requirements  16173 - unique identification number

  • MIL-C-16173D - An earlier version of the spec, established in 1966. Superceded in 1993 by revision E
    MIL - Military Specification  C - Corrosion Inhibitor  16173 - unique identification number

MIL-PRF-16173 Grades Explained

  • Grade 1 - presents a tough, black drying film ideal for external finished machine parts

  • Grade 2 - offers a soft, greasy film, providing undercover protection for metal surfaces on machines, instruments, and bearings

  • Grade 3 - consists of an oily film, functioning as a water-displacing coating for metal parts

  • Grade 4 - delivers a non-tacky, clear surface suitable for general-purpose indoor/outdoor protection, essential for handling, stacking, or counting

MIL-PRF-16173 Classes and VOC Compliance

MIL-PRF-16173 coatings are available in both Class 1 and Class 2, offering flexibility depending on environmental compliance needs. Class 2 specifications are formulated to meet LOW VOC requirements, making them ideal for use in facilities with strict air quality regulations.

As a corrosion preventive compound, each class is engineered to protect large equipment and metallic surfaces from long-term exposure and environmental degradation. While Class 1 compounds typically form hard or semi-hard films for outdoor or exposed parts, Class 2 products provide grease-like or waxy coatings suited for enclosed or undercover components.

What does MIL-PRF-16173 protect against?

A: MIL-PRF-16173 coatings are designed to protect metal surfaces from corrosion, especially during long-term storage, shipment, and adverse environmental exposure. They act as rust-inhibiting layers to safeguard critical components.

What is a corrosion preventive compound?

A: A corrosion preventive compound is a coating designed to form a protective barrier on metal surfaces to prevent rust and oxidation. Products conforming to MIL-PRF-16173 are widely used in military and industrial environments for this purpose.