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 5930-00-406-4209
NSN 5905-00-157-5708
NSN 5960-01-461-9284
NSN 5910-00-294-3329
NSN 5950-01-212-9588
NSN 6620-01-342-5953
NSN 5920-01-461-7676
NSN 6150-01-395-8979
NSN 6135-01-176-2206
NSN 5965-01-074-7306
NSN 5930-01-266-2958
NSN 4140-01-158-4139