O2 Sensor OX66 Gasket installation

[wildonesfl]

I'm cleaning my SX225TXRY O2 Sensor for the 1st time. Previous owner or owners mechanic really scewed up. Left out a bolt and top bolt was only hand tight. Needless to say the hole thing was soaked in oil.

My main question; Should Gasket Sealant be used when install the new housing gasket?