Aluminum-filled epoxy putty for dependable non-rusting repairs to aluminum castings machinery and equipment widely used in HVAC applications. 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. Qualifies under DOD-C-24176B/(SH) Type II. 60-minute working time