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 5925-00-290-4451
NSN 5935-00-204-9074
NSN 5960-01-567-1096
NSN 6145-00-825-4701
NSN 6320-00-149-7570
NSN 5975-01-283-8831
NSN 6105-01-124-3877
NSN 2925-01-171-6106
NSN 6610-01-555-8364
NSN 5895-01-283-6058
NSN 6145-01-495-3382
NSN 5996-01-562-2370