Self-sealing refrigerant

A leak sealing and leak preventing refrigeration fluid composition for refrigeration and air conditioning units comprising:

• (a) a refrigerant fluid selected from the group consisting of chlorofluorocarbons, ammonia, sulfur dioxide, ethyl chloride, methyl chloride, dimethyl either, mixtures of methyl chloride and dimethyl ether, and mixtures of carbon dioxide with nitrous oxide;
• (b) a vapor and liquid phase sealant for forming a seal at the site of a leak in an air conditioning or refrigeration circuit, said sealant being an hydrolyzable or polymerizable organosilane or mixture thereof compatible with said refrigerant fluid which does not substantially interfere with the properties of the refrigerant fluid, which exists as a liquid in the liquid portion of the circuit and as a gas in the gaseous portion of the circuit, and which is substantially inert to the material from which the circuit is made, said organosilane sealant being selected from the group consisting of aminosilanes, mercaptosilanes, acyloxysilanes, mixtures of alkoxysilanes with an acidic anhydride or an amine, and mixtures of said aminosilanes and said other organosilanes.