A two component solvent based inorganic zinc rich ethyl silicate primer, containing 85% zinc by weight, in the dry film. Complies with the composition and performance requirements of SSPC Paint 20. A metallic zinc primer suitable for use with a wide range of high performance systems and topcoats in both maintenance and new construction of bridges, tanks, pipework, offshore structures and structural steelwork. Provides excellent corrosion protection for correctly prepared steel substrates, up to temperatures of 540°C (1004°F) when suitably topcoated. Fast drying primer capable of applic