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 6135-01-377-5729
NSN 5835-01-245-8077
NSN 6645-01-545-2954
NSN 5835-00-443-1079
NSN 6685-01-388-5718
NSN 6135-01-280-2883
NSN 5920-01-612-9362
NSN 5930-01-015-1992
NSN 5999-00-922-8368
NSN 6645-01-231-2432
NSN 5935-01-272-3622
NSN 2925-00-265-7539