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 5935-01-583-8035
NSN 5915-01-262-6837
NSN 6145-00-735-7764
NSN 5950-01-473-9352
NSN 6650-01-428-2251
NSN 5996-00-397-4318
NSN 6620-01-034-4539
NSN 5996-01-406-1821
NSN 5935-01-421-8313
NSN 5990-00-904-9004
NSN 5910-01-319-4776
NSN 5990-01-432-4249