Asbestos has occasionally been used in spacecraft and other space artifacts:
In the Apollo reaction control system.
In the igniter of the Apollo tower jettison motor.
Vinyl asbestos floor tiles in the Mobile Quarantine Facility, the trailer where early Apollo were isolated after returning from the moon.
Part of the fireproof coating Fluorel, used in Apollo as a conformal coating of wiring and circuit boards, a coating of the lunar EVA cuff cards, and to coat the interior of the MQF.
As thermal insulation in Soyuz modules.
In Space Shuttle solid rocket boosters (also here).
In Space Shuttle fuel cells (also here).
Has there been any removal or treatment of asbestos prior to putting space articles on museum display? Or is it just considered to be inaccessible and nothing is needed?