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 5915-01-132-9123
NSN 6110-00-444-2625
NSN 5905-01-343-5331
NSN 5965-01-035-5475
NSN 5920-01-053-0986
NSN 5960-01-641-5493
NSN 5910-01-568-6862
NSN 5945-00-082-1195
NSN 4140-00-401-7851
NSN 6135-00-209-6918
NSN 5975-01-206-4792
NSN 5935-01-386-6367