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 5990-01-030-5206
NSN 4140-01-091-0270
NSN 5855-01-495-2670
NSN 6645-00-551-5229
NSN 6685-01-058-4437
NSN 5950-00-544-7528
NSN 6130-00-171-7400
NSN 6610-01-155-2661
NSN 5920-01-171-9139
NSN 5999-01-534-7945
NSN 5960-00-889-5470
NSN 5950-00-760-1056