For high-speed electric motors and "sealed-for-life" bearings, you need a grease that won't break down or "bleed" under high heat. Mammoth recommends Polytac specifically because its polyurea thickener offers superior shear stability compared to traditional soap greases. It’s the professional choice for keeping precision bearings running cool and quiet for the long haul.

Phillips 66® Polytac is a high-quality, multipurpose, non-extreme pressure (EP), polyurea grease developed for the lubrication of rolling element bearings in high-temperature, long-life applications where extreme pressure protection is not required. It is particularly recommended for the lubrication of electric motor bearings, sealed-for-life bearings, and other lightly loaded, high-speed antifriction bearings. Manufactured with high-quality base oils, select inhibitors, and a non-soap, polyurea thickener, it has excellent oxidation resistance and high shear stability for long service life. It provides excellent protection against rust and corrosion and has outstanding resistance to water washout, offering significant performance advantages over conventional soap-thickened greases.