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 5998-00-237-3815
NSN 4140-01-584-5706
NSN 5975-01-261-2995
NSN 6145-00-703-6292
NSN 5855-01-430-0132
NSN 5998-01-223-1329
NSN 4140-01-201-4359
NSN 5920-01-445-6970
NSN 5925-01-485-3595
NSN 6130-01-659-0290
NSN 5965-00-841-3628
NSN 6220-00-961-6379