Hercules® Boiler Liquid, Stop-leak, Bottle, 32 oz, Glycol Base, Composition: 5 to 15% Cellulose, 0.1 to 1% CrystalLine Silica (Quartz), 94.91% Other Components Below Reportable Levels, Liquid, Reddish Brown, Pleasant, 6.4 pH, 1.03 Specific Gravity, 212 deg F Flash, 0 g/l VOC, 10 cP Viscosity
Seals and repairs cracks and leaks in steam and hot water systems Will not clog hot water coils, controls, valves or vents Resists high pressure and is not affected by boiler cleaners Reddish-brown color Prevents steam boiler surging Will not cause priming or foaming