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 5905-00-177-7833
NSN 5835-01-512-4834
NSN 5855-00-930-9478
NSN 7035-01-078-6252
NSN 5910-01-633-9963
NSN 5925-01-389-1215
NSN 5910-00-468-4118
NSN 5960-00-047-3944
NSN 6145-01-389-4350
NSN 5990-01-626-3840
NSN 4140-01-347-3342
NSN 6135-01-159-9705