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 5925-01-614-0112
NSN 5905-00-504-8586
NSN 5925-01-333-6442
NSN 5930-00-727-3649
NSN 5925-01-256-1833
NSN 5965-01-612-2879
NSN 5996-01-098-1822
NSN 5996-01-349-7059
NSN 6135-01-502-8771
NSN 5990-01-579-2711
NSN 5855-01-483-2774
NSN 5920-00-331-0583