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 6135-01-556-7318
NSN 5945-00-455-6502
NSN 5920-01-381-9310
NSN 6650-01-230-5155
NSN 5985-01-393-7878
NSN 6110-01-357-0745
NSN 6130-00-144-8018
NSN 5999-01-317-2011
NSN 6620-01-316-4782
NSN 7035-00-193-2269
NSN 2925-01-565-6410
NSN 5920-01-239-2038