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 5855-01-447-3137
NSN 6650-01-204-2524
NSN 6685-01-080-6045
NSN 5855-01-201-4857
NSN 6150-00-502-9593
NSN 5915-01-270-3309
NSN 6145-01-428-9932
NSN 5996-01-217-7980
NSN 5910-01-034-2597
NSN 5985-00-868-1785
NSN 6130-01-052-2007
NSN 5965-01-512-1245