No other part numbers with same form, fit, and function found.
A spring steel ringlike item designed to be placed between a piston ring and the piston to maintain the correct piston ring pressure against the cylinder wall.
NSN 5999-00-900-4778
NSN 5996-01-413-9280
NSN 5930-00-510-6758
NSN 6130-00-100-0175
NSN 2925-01-439-4451
NSN 6620-00-226-2285
NSN 5985-01-262-3155
NSN 5925-00-762-3790
NSN 5975-01-513-5182
NSN 6150-01-603-7757
NSN 6320-01-560-7177
NSN 5990-01-094-7740