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 2925-00-574-8796
NSN 5905-01-445-0782
NSN 5920-01-424-5320
NSN 5910-00-571-6854
NSN 5960-00-241-2911
NSN 5945-01-530-5296
NSN 6110-00-146-2114
NSN 5935-01-468-7594
NSN 6320-00-432-2772
NSN 5960-01-599-4726
NSN 6320-01-072-2073
NSN 5999-01-297-2674