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 5945-01-089-7220
NSN 5960-01-526-3843
NSN 5950-01-164-2489
NSN 6610-01-371-3006
NSN 5905-01-512-1354
NSN 2925-01-257-0695
NSN 4140-01-101-4454
NSN 6610-01-144-1951
NSN 6110-01-447-2770
NSN 5910-01-007-9298
NSN 6685-01-442-2382
NSN 5960-00-994-0783