Check the listing for details. Polyrex EP2 Ultimate Performance Grease for Heavy Duty Applications 1oz bag. Condition: New. Listed at 9.99 USD. Polyrex EP2 Ultimate Performance Grease for Heavy Duty Applications Polyrex EP 2 is a shear-stable polyurea grease with excellent extreme-pressure (EP) and load-carrying characteristics. The proprietary polyurea thickener system exhibits excellent resistance to oxidation and oil separation at operating temperatures as high as 160°C (320°F). With its outstanding high-temperature oxidation stability, load-carrying capability, shear stability, water resistance and wide operating temperature range, Polyrex EP 2 is an excellent multi-purpose grease for a wide array of industrial and construction applications. Features and BenefitsEXTREME-PRESSURE PROTECTION AND THERMAL STABILITYPolyrex EP 2 contains a proprietary extreme-pressure (EP) additive package that provides load-carrying capability without degrading the thermal stability of the grease at high temperatures. Conventional sulfur- and phosphorus-base EP additives used in other multi-purpose greases begin to oxidize rapidly at temperatures above 250°F. Polyrex EP 2, on the other hand, continues to provide a high level of wear and extreme-pressure protection up to 160°C (320°F) without rapid oxidation of the anti-wear or EP additives.The outstanding high temperature lubrication life of Polyrex EP 2 is impressively demonstrated in the ASTM D 3336 grease life test - with an average ASTM D 3336 life of 490 hours, 3 to 5 times better than the high-temperature lubrication life of competitive multi-purpose lithium-base greases.SUPERB SHEAR STABILITYThe proprietary polyurea thickener system in Polyrex EP 2 exhibits excellent durability and stability when subjected to a mechanical shearing force. For example, in the ASTM D 217 cone penetration test, the consistency of Polyrex EP 2 changed by approximately one NLGI grade after being worked for 100,000 strokes - similar to the performance of high-quality lithium-complex greases, which are the benchmark for excellent shear stability. By contrast, competitive polyurea greases containing shear-unstable thickener technology can soften by three NLGI grades under the same test conditions. Good mechanical shear stability is important in roller bearing applications where excessive grease softening may lead to grease leakage or purging from the bearing.EXCELLENT WATER RESISTANCEPolyrex EP 2 formulation is enhanced with water-resistant polymers that enable it to form a tenacious protective film in applications that are heavily contaminated with water. The excellent results obtained for Polyrex EP 2 in the water washout (ASTM D 1264) and water spray-off (ASTM D 4049) tests demonstrate the grease's ability to stay in place, even in the presence of a pressurized water spray.In summary, Polyrex EP 2 offers the following features and benefits:Outstanding high-temperature oxidation stabilityExcellent mechanical shear stabilityThermally stable extreme-pressure (EP) protectionWide operating temperature range -20°C (-4°F) to 160°C (320°F)Exceptional resistance to water spray-off and water washout