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 5930-01-170-6366
NSN 6130-01-617-6397
NSN 6650-01-376-6965
NSN 5990-01-395-4194
NSN 5905-00-826-3282
NSN 5920-01-224-7946
NSN 2925-01-363-1805
NSN 6620-01-216-0904
NSN 5835-01-380-5943
NSN 5910-01-337-5807
NSN 5998-01-650-6068
NSN 5960-01-040-3884