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 6130-00-446-6922
NSN 5990-00-796-1728
NSN 6620-01-611-7907
NSN 5960-00-297-7099
NSN 5910-00-784-0696
NSN 5930-01-023-1826
NSN 5910-01-487-8330
NSN 4140-01-562-4449
NSN 5985-01-447-4278
NSN 6610-00-012-4624
NSN 5960-00-287-4982
NSN 6105-01-276-7772