This is a dust shield for the arsr-4 rotary joint
An item so shaped as to deflect one or more of the following: dust, dirt, grease, oil, or liquid into a desired direction or away from a particular area. Can be attached to a stationary or with a revolving part. may or may not be a mechanical device.
NSN 6240-01-626-8415
NSN 6130-01-059-9558
NSN 5945-01-658-1738
NSN 5935-01-014-5160
NSN 5975-00-263-3379
NSN 6610-00-202-5481
NSN 5996-00-213-7121
NSN 5975-00-471-8431
NSN 6110-01-367-4618
NSN 6105-01-131-9677
NSN 6105-00-850-6139
NSN 6105-00-328-0793