I posted about Sealtite because I'm constantly running into journeymen, foremen and contractors who are unaware that it's appropriate for most applications -- particularly to include direct burial.
As electure correctly notes, it's not for use in the ocean -- nor is it NASA rated.
Like MI, it's big fault is that it's not cheap.
BTW, angled fittings are not acceptable in buried work. That would also include encased work, too.