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 5965-01-320-1808
NSN 5998-01-391-5000
NSN 6150-00-901-7264
NSN 5945-01-204-8144
NSN 2925-01-175-1217
NSN 6110-00-229-5541
NSN 5975-01-473-5089
NSN 5905-01-647-1034
NSN 5975-01-547-4358
NSN 6320-01-082-2459
NSN 6320-01-571-8974
NSN 5925-01-080-2226