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 6610-00-072-8608
NSN 5985-00-722-3791
NSN 6110-00-175-3661
NSN 5935-01-431-2494
NSN 5985-01-206-4616
NSN 5920-01-094-7284
NSN 5996-01-350-4139
NSN 5945-00-463-3383
NSN 5965-00-267-4173
NSN 5996-00-063-4864
NSN 5965-01-020-1514
NSN 6610-01-651-8659