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 6320-01-659-2819
NSN 5895-01-437-8189
NSN 5960-00-483-6074
NSN 5965-01-627-7392
NSN 5950-00-369-1593
NSN 5945-01-568-0254
NSN 5920-01-646-0543
NSN 5925-00-300-6355
NSN 5910-01-554-0836
NSN 5950-00-975-4409
NSN 5920-01-047-1604
NSN 6135-01-469-6429