Form: This specification covers a two-component air-curing@ aluminum-powder-filled@ epoxy-resin-base material in the form of a paste or putty@ suitable for application by spatula or putty-knife. Application: Primarily for filling small holes@ crevices@ and gaps or for smoothing areas requiring thin layers of material to produce the required smoothness on aerodynamic surfaces subject to service temperatures from -55??o +150??(-65??o +300??.