A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-01-634-0678
NSN 5985-01-110-5981
NSN 6320-00-284-1524
NSN 6320-01-111-8851
NSN 5975-01-399-0113
NSN 5950-01-444-3675
NSN 5990-01-209-2016
NSN 6650-01-549-4383
NSN 5950-00-809-3178
NSN 5960-00-204-7506
NSN 5998-01-422-0333
NSN 6240-00-689-8504