Use a COMETIC re useable gasket here, no leak no sealer.
Ohterwise LOCTITE 5900 or 5910, can be used as well as or instead of a gasket.
Other RTV gasket stuff do contains acids that are used to cure the sealant, but will cause no harm used in this area.
It does not need to be high temp stuff at all, as only gets to around 95C here, silicone gasket is ok so long as not near water or oil!!
tabetha