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 6650-00-316-4889
NSN 6240-01-018-4895
NSN 5945-00-859-0378
NSN 2925-01-077-6867
NSN 5996-00-017-9189
NSN 6620-01-241-9088
NSN 5960-01-580-6360
NSN 5920-00-584-4592
NSN 6320-00-394-8458
NSN 6145-00-150-1642
NSN 5855-01-406-7237
NSN 5835-00-217-2147