Murphy's Tire and Tube Mounting Compound is designed to assist in mounting rubber tires and tubes on all types of wheels. It is fortified with rust inhibitors to provide protection against wheel corrosion. Ultra-thick concentrate for excellent performance when packing beads. Murphy's can be used in its concentrated form or diluted in water (3-4 parts water: 1 part Murphy's). Murphy's mild formula is worker friendly, environmentally friendly non-toxic, biodegradable, and totally safe for all tires. Contains no petroleum oils of any kind. Made from natural, renewable resources. A difference you can see and smell because we use only high-quality vegetable oil in the manufacture of Murphy's tire mounting lubricant, which is lighter, clearer, extremely consistent, and does not separate. Competitors' lesser quality formulas, made with cheap raw materials, are often darker, thicker, unpleasant smelling (for a reason), and separate out.