A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 2925-01-594-5385
NSN 6145-01-195-6013
NSN 6130-01-423-1383
NSN 6110-01-192-4904
NSN 5950-01-058-1353
NSN 6685-01-142-6460
NSN 5910-01-067-8185
NSN 6320-01-543-3238
NSN 6135-01-435-8451
NSN
NSN 6220-00-330-3717
NSN 5930-01-367-4621