JET-LUBE EZY-OPEN Valve Penetrant is designed to penetrate scale, rust, corrosion and old oxidized hardened valve lubricants which can disable or make valves extremely difficult to operate. EZY-OPEN is a soft gel specifically formulated from a select group of nonflammable, nontoxic and biodegradable fluids capable of softening or dissolving valve lubricants and sealants, residual gums, lacquer, scale and corrosion deposits.