In my experience in a previous job life (8 years of building and mechanically inspecting oxygen regulators) Vibra-Tite VC-3 flat out did not work if we used the suggested method of curing. The Vibra-Tite engineering group developed a special low heat curing/baking method specifically for our application with VC-3 that did ultimately work. COTS (Commercial off the shelf) Loc-Tite 242 worked as intended without the time intensive baking /curing needed with Vibra-Tite VC-3. When referencing Loc-Tite we should always use the numerical identifier associated with the compound being used (242,440, etc. ) as there are multiple versions for different applications many of which are blue, or red, or green, and purple.