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 6320-01-019-1028
NSN 6645-01-364-0867
NSN 5999-01-512-1871
NSN 6645-00-764-3355
NSN 5835-01-193-3175
NSN 5960-01-281-4925
NSN 5930-00-683-1847
NSN 5960-01-341-4447
NSN 5975-00-364-2603
NSN 5950-01-281-7466
NSN 5920-01-189-5714
NSN 5910-00-999-6323