MIL-PRF-16173E CLASS I GRADE 5
ESGARD PL-5.1 is a hot water, low pressure steam removable thin film preservative. It contains an effective corrosion inhibitor to protect metal surfaces while in manufacturing, storage, or shipping. PL-5.1 is a listed qualified product under MIL- PRF-16173E CLASS I GRADE 5 (aka: P-21 preservatives).
FIELD OF APPLICATION
ESGARD PL-5.1 is intended for use in place of GRADE 3 (P-3) preservatives on metal(s) such as aluminum and magnesium alloys which may be attacked by an alkaline treatment during the preservative removal stage. PL-5.1 is used where water or saline solutions must be displaced from corrodible surfaces and the corrosion prevented or arrested. It is also used for protection of interior machinery,
instruments or material under cover for limited periods and protection of critical bare steel or phosphate surfaces for extended periods when packaged with satisfactory barrier materials.
