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 5990-01-019-3447
NSN 5895-01-027-4160
NSN 5895-01-478-8613
NSN 6645-01-071-7515
NSN 5975-01-495-0991
NSN 5915-01-085-5820
NSN 5975-01-502-7338
NSN 5905-01-207-3475
NSN 5920-01-542-8877
NSN 5835-00-665-3395
NSN 6320-01-019-1028
NSN 5960-01-023-8037