Aluminum-filled epoxy putty for dependable non-rusting repairs to aluminum castings, machinery and equipment. Bonds to aluminum and other metals. Can be machined, drilled or tapped. - Repairs air conditioning system components. - Excellent resistance to chlorofluorocarbons. - Bonds to aluminum and many other metals. - Fills porosity in aluminum castings. - Can be machined, drilled or tapped using conventional metalworking tools.