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 5965-01-089-8579
NSN 5965-01-234-6844
NSN 5960-01-023-8037
NSN 5996-01-115-1688
NSN 7035-00-126-1899
NSN 5965-00-142-9052
NSN 5905-00-316-3473
NSN 5930-01-168-6144
NSN 6145-01-406-4201
NSN 6620-01-446-2258
NSN 6220-01-444-0546
NSN 5925-01-044-2306