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 5945-01-406-0704
NSN 4140-01-440-4379
NSN 5996-01-076-7374
NSN 5835-01-200-7153
NSN 5930-01-098-9103
NSN 5998-00-606-1310
NSN 2925-00-246-3077
NSN 7035-01-617-6136
NSN 6620-00-774-3638
NSN 5975-01-026-1323
NSN 5915-01-502-4285
NSN 6610-01-461-8180