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 6135-00-134-6648
NSN 4140-01-521-2357
NSN 4140-01-073-9368
NSN 5999-01-501-5783
NSN 5910-01-066-3028
NSN 6220-01-528-7232
NSN 6320-01-233-5798
NSN 5985-00-827-6827
NSN 5895-01-429-9305
NSN 6610-01-240-9690
NSN 6130-01-430-3686
NSN 5945-01-133-6985