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 6110-01-364-9779
NSN 7035-01-450-6400
NSN 6320-01-262-8642
NSN 5835-01-337-8635
NSN 5985-00-884-2918
NSN 5960-01-522-0391
NSN 4140-01-517-3632
NSN 6620-01-104-5758
NSN 5920-00-964-4538
NSN 5965-01-528-6453
NSN 5975-01-462-0700
NSN 5895-01-541-4812