The rubber caps should be fine for at least a few years. The Honda guys say they are used to reduce noise in the brakes. I don't know if they serve any other purpose but they definitely are not necessary.Thanks for this. I like Royalty Auto vids and bought their recommended lug brush socket with the pumice-like stuff on the end of it for the hubs when I watched it a while back. I totally forgot about this vid, but remember it now! Good to know about the pin not needing the cap, but I bought new stuff and used silicone grease regardless. I would rather not have to deal with that again bc that was a real b*tch to get out of the caliper bracket! I am optimistic using compatible grease will do the trick this time...hopefully, but time will tell.
The caps on my Odyssey swelled after about 8 years. I'm not sure why, as the van never got anything but Sil Glyde prior to that.
I started using Super Lube brake lube a few years ago and so far no swelling, but it's too soon to know whether they will swell at the 8 year mark. If they do, the caps go to the trash and they won't be replaced!