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 5996-00-089-9369
NSN 4140-00-088-7999
NSN 5990-00-155-2306
NSN 6685-00-548-5460
NSN 5895-01-597-5758
NSN 5895-00-784-1167
NSN 5996-01-633-7979
NSN 6610-01-646-9101
NSN 5945-01-481-3564
NSN 6650-01-552-3267
NSN 6610-01-352-5500
NSN 6240-00-962-0525