Outer piston - ultraflex
No other part numbers with same form, fit, and function found.
NSN 6650-00-078-5773
NSN 5930-00-292-1089
NSN 6110-01-209-4709
NSN 5920-01-605-1656
NSN 5998-01-169-9412
NSN 5990-00-818-7136
NSN 6130-01-502-8823
NSN 5998-00-447-1721
NSN 6130-00-419-3642
NSN 5965-01-420-2629
NSN 6685-01-450-8960
NSN 5935-01-087-7568