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 5990-01-018-1994
NSN 5895-01-364-2464
NSN 5950-01-428-9651
NSN 6645-00-925-0111
NSN 5960-00-909-7009
NSN 2925-00-026-0005
NSN 5960-00-620-5298
NSN 5960-01-089-8155
NSN 5996-01-033-6585
NSN 5998-01-504-7296
NSN 5965-01-196-7760
NSN 5920-00-501-3965