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 5925-01-440-2374
NSN 5855-01-644-3271
NSN 4140-00-409-6785
NSN 6240-00-423-9575
NSN 6220-01-059-1393
NSN 6240-00-968-9274
NSN 5999-01-230-5466
NSN 5990-01-198-0115
NSN 5990-01-054-3332
NSN 6610-01-615-9861
NSN 5975-01-119-3833
NSN 6220-01-432-0089