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 6110-01-103-8284
NSN 5920-01-290-1606
NSN 5895-01-196-5625
NSN 6320-01-497-3116
NSN 6145-00-204-5992
NSN 5985-01-009-4312
NSN 5905-01-077-4826
NSN 5965-01-444-1322
NSN 5945-00-533-2997
NSN 5990-01-049-8499
NSN 5950-00-496-9985
NSN 6145-00-952-2872