On 23 Nov, 08:49, (Steve Firth) wrote:

For components that are exposed to spray or abrasion I'd recommend an
epoxy coating.

Or "floor paint", as it's usefully obtained when refitting the
workshop. PU, chlorinated rubber or even epoxy floor paints all make
good extra-wear paints for parts expecting a hard life, although only
chlorinated rubber will last on flexing suspension parts.