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 5835-00-051-9092
NSN 6610-00-936-8535
NSN 6220-01-149-0144
NSN 6650-00-532-8125
NSN 5996-01-475-4694
NSN 6620-01-411-5750
NSN 5950-01-624-1687
NSN 5905-00-840-5281
NSN 5990-01-307-4489
NSN 5990-00-081-3937
NSN 5998-01-603-4756
NSN 5996-00-619-3378