Loctite blue sounds smart. Can't recall if there are lock-washers w/ the nuts, but likely are. If the gasket is sound, should be re-usable, though cheap if you have time to wait. I never buy just 1 gasket. Can buy Permatex or Gasgacinch at any auto parts.

The lift pump w/ broken ear was trashed (can't weld back), but I had another one. Of course I didn't toss it because the innards may be needed some day. If you keep backup parts, maintenance is much easier. I have all parts from my failed engine.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans