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 5999-01-645-8153
NSN 4140-01-436-5184
NSN 6650-01-043-4221
NSN 5965-00-139-1039
NSN 5990-01-632-0969
NSN 6135-00-911-9321
NSN 6150-01-423-7487
NSN 4140-00-838-1252
NSN 5950-01-173-5138
NSN 5925-01-089-2175
NSN 5960-01-337-2823
NSN 5990-01-465-9235