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 5965-00-505-2166
NSN 5999-00-854-9931
NSN 6150-01-025-1467
NSN 5920-00-674-5882
NSN 6620-01-481-1358
NSN 5930-01-527-8002
NSN 5996-01-292-2761
NSN 5975-01-229-4503
NSN 5945-01-006-8411
NSN 5935-01-382-9629
NSN 5925-01-322-1147
NSN 7035-01-633-9537