Apexior No 3 5LtrApexior No. 3, on the other hand, prefers lower temperatures and makes an ideal anti corrosive coating for metal surfaces in continuous contact with fresh or salt water at temperatures up to 52C (125F). To add to its versatility, Apexior No. 3 also has a wide range of marine applications and is resistant to dry heat up to 232C (450F). Both Apexior No. 1 and No. 3 are very easy to apply and maintain and impart no smell, or discolouration to liquids