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 5835-01-608-4285
NSN 2925-01-629-9416
NSN 6610-00-585-1524
NSN 6220-00-247-4859
NSN 6145-01-515-1153
NSN 5999-00-110-7365
NSN 6610-01-389-3082
NSN 5920-01-521-3016
NSN 6240-01-301-5412
NSN 5855-00-118-8762
NSN 5999-01-424-9297
NSN 5950-01-381-1324