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 5910-01-204-3322
NSN 5835-01-301-0022
NSN 6610-00-861-3665
NSN 5905-01-590-2101
NSN 6145-01-012-2557
NSN 6650-01-389-9212
NSN 5910-00-156-7293
NSN 6105-01-258-2314
NSN 6645-00-946-6074
NSN 6220-01-660-8556
NSN 6135-00-315-1187
NSN 6620-01-359-9916