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 6145-01-132-1165
NSN 6105-01-025-8568
NSN 6110-01-177-3189
NSN 5999-00-538-2361
NSN 6145-01-408-7156
NSN 6145-01-264-0270
NSN 5960-01-468-6508
NSN 5945-01-139-4260
NSN 6110-00-163-6223
NSN 6650-01-535-1120
NSN 5965-00-408-5501
NSN 6645-00-337-3638