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 5999-01-012-0919
NSN 6650-01-425-2572
NSN 5920-01-458-5146
NSN 7035-01-113-6492
NSN 5905-00-257-5855
NSN 4140-01-528-5715
NSN 5895-01-416-3983
NSN 6130-01-067-8107
NSN 5965-01-605-3878
NSN 6130-01-563-1114
NSN 5910-01-514-6990
NSN 5835-01-087-1673