Siloxa-Tek 8505 Ultra Concentrate - 1 Gallon Penetrating Concrete Sealer, Water, Salt and Oil Repellent An industrial-grade, water-based, silane/siloxane engineered to reduce water and moisture intrusion, protect concrete from deicing salts and chlorides, and resist staining from oil and fluids. Prevents deicing salt/chloride damage, freeze thaw damage, spalling, pitting, cracking, mold, mildew, efflorescence, dirt pick up Resits staining from oils, leaves, auto fluids etc. Reduces moisture intrusion, water ingress and water vapor transmission Excellent penetration, easy application, no appearance change, low VOCs, water beading effect