OSPHO 1 Qt. Rust Treatment Air Compressors Gaps & Cracks Minimal Expanding

Gaps & Cracks Minimal Expanding Foam Sealant

fully hardened

For Use Where Code Calls For Primer Verification

instant read bi-therm

OSPHO 1 Qt. Rust Treatment Air Compressors Gaps & Cracks Minimal ExpandingOSPHO is a rust inhibiting coating not a paint. OSPHO causes iron oxide (rust) to chemically change to iron phosphate an inert, hard substance that turns the metal black. Use on new metals, for new ferrous or aluminum metals. Is effective for exterior and interior work alike. Recommended for use under oil base primers and paints. Test a small area before using under epoxy or latex base paint. Covers approximately 600 Sq. Ft. per gallon. Normally