Republic OIl HD Bentonite / Bentone / Clay High Temp ISO 1000 Grease. This is product of the highest quality taken from sealed drums and packaged into house tubes in plain white tubes. Copmpare to S2 U1000 2. Heavy duty non-melt grease designed for industrial equipment operating at continuous temps of up to 250F and up to 350F with frequent lubrication. Designed for ball, roller and sleeve bearings as well as grease lubricated gears. Excellent performance in wet and heavily loaded applications. Excellent protection against water washout with resistance to rust and corrosion