One of my pet peeves is seeing just how many of the so called "professional repair" people burn the plastic components on our vintage gear when, say, recapping them. Sometimes, it is almost impossible to prevent damage to these connectors when using hot air to rework the areas. Use of hot tweezers, or, two soldering irons applied in parallel to both ends of the component can be done to safely remove them, but, these are somewhat expensive solutions.
So, I developed my own technique for preventing such damage, via the use of cellulose casting ring liner, which is used in dental laboratory technology when casting metal dental crowns. It resists being placed into a furnace during wax pattern burnouts, at temperatures exceeding 1000F, with very little degradation. So, it will easily resist 668F (350F) used in soldering and desoldering components.
Here is a video link (my first youtube video, actually) showing how to use it...excuse the poor audio quality, as I don't have a fancy camera, just a cell phone.