Loctite 7649/7471 primer/activator
1. According to the various downloadable Loctite user guides, most Loctite threadsealing products, such as Loctite 222 and 243, must be used with Loctite 7649 or Loctite 7471 primer/activator on inactive surfaces. The only active surfaces listed are brass, copper, bronze, or iron. Inactive surfaces are aluminium, stainless steel, etc., and obviously include our spinner and its bushing, both being non-metallic.
2. A primer/activator is also required when the thread gap to be sealed or locked is large, a relative dimension, but one that I think would apply to the bushing/spinner gap.
3. A primer/activator can be used when temperatures are very low to speed up the process.
Assuming that Loctite 243 has been used successfully to bond the bushing into the spinner, or it wouldn't be in the KAI, my question is, 'have any bushings fallen out despite using a primer/ activator?'