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 5935-01-485-3325
NSN 5965-00-500-5826
NSN 6645-01-258-5558
NSN 5965-01-469-2504
NSN 5950-00-595-9934
NSN 5998-01-514-7449
NSN 4140-01-391-9994
NSN 4140-01-088-6624
NSN 6135-00-444-1402
NSN 5950-00-467-1440
NSN 5998-01-286-9890
NSN 5905-00-558-1226