The aerosol - sp – 322 helps in protecting non-porous surfaces by resisting mild acids rust, scratches, abrasion, moisture as well over spraying of paints. Also, the aerosol - sp – 322 works up to 150°f. used in : precision toolsstainless steelpaint boothsglassanodized aluminumunpainted metallensesmirrorschrome diescastingsbaked enamel surfacesmasking