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 6645-01-049-6116
NSN 6620-01-521-9710
NSN 5920-01-243-3931
NSN 6135-00-962-4111
NSN 5925-00-172-3053
NSN 5920-01-130-8411
NSN 6135-01-100-3593
NSN 6110-01-350-3449
NSN 5998-01-619-3307
NSN 2925-01-067-4446
NSN 6145-01-194-5556
NSN 5999-00-480-5895