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 6135-00-243-8330
NSN 6150-01-308-1932
NSN 5996-01-109-1586
NSN 5985-01-020-3641
NSN 6220-01-219-9670
NSN 2925-01-066-5231
NSN 6105-01-094-4592
NSN 5945-00-900-3932
NSN 5960-00-584-4553
NSN 5945-01-053-5624
NSN 7035-00-981-7216
NSN 5996-01-357-7535