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 6105-00-361-2096
NSN 5920-01-021-6865
NSN 6645-00-767-6307
NSN 6130-00-691-1602
NSN 4140-01-113-2055
NSN 6145-00-853-1648
NSN 5990-00-476-4336
NSN 6150-00-064-5942
NSN 5915-01-414-0049
NSN 5999-01-659-3404
NSN 5965-00-469-5009
NSN 6240-01-013-8895