Sprinkler Lube 1200 is designed for use in the gear boxes of center pivot irrigation systems. This semi-fluid grease which is between a 00 and a 000 grade has some special properties. It carries heavy loads and shock loads. At the same time, Sprinkler Lube 1200 passed the copper corrosion test with a 1b, showing that it will not attack any yellow metals such as copper or brass. Formulated as a thixotropic grease, it thins down in a gearbox, but when left idle thickens back to a penetration of 415. This allows Sprinkler Lube 1200 to have good flow back and heat transfer around bearings and gears while remaining thicker at the outer areas of the gearbox to help with sealing, keeping moisture out and lubricant in.