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 5960-01-539-1956
NSN 5945-01-386-6176
NSN 6650-01-058-0049
NSN 6650-00-119-9431
NSN 5945-00-451-3159
NSN 5905-01-456-5194
NSN 5975-01-444-2406
NSN 5985-01-024-9640
NSN 6110-01-291-1301
NSN 6150-01-472-1689
NSN 6620-01-595-4691
NSN 6130-01-032-3966