MIL-PRF-3572B

Abstract

This specification covers colloidal graphite in oil lubricant primarily for ordnance but may be used for other purposes (see <a>6.1</a>) <b><u>Intended Use:</u></b> The lubricants are considered military unique since the majority of use is on gun barrel/gun slide bearing assemblies associated with Navy guns. The use of the lubricants are critical to affecting the accuracy of the guns. The requirements of the lubricants, that impact the performance of the lubricants, are not commercially available. General descriptions of varying uses for each of grades A, B, and C are specified in <a>6.1.1</a>, <a>6.1.2</a>, and 6.1.3. Grade A lubricant is suitable for the lubrication of machine gun housing guides, windshield wipers, and other lightly loaded sliding members exposed to the weather for both low and elevated temperatures. Grade B lubricant is suitable for the lubrication of gear trains of torpedoes. Grade C lubricant is suitable for the lubrication of medium or heavy duty gun slides without causing excessive resistance to counter recoil at ambient temperatures down to &#8722;23&#176;C. It should retain sufficient lubricating properties to permit free recoil and counter recoil when the gun is heated as a result of sustained fire. The lubricant will not be used if there is a corrosion concern and should never be used where dissimilar metals are present. <br>