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 6610-01-425-1523
NSN 4140-00-818-2891
NSN 6645-01-331-3364
NSN 5920-01-406-3157
NSN 5945-00-823-2610
NSN 5996-01-030-9694
NSN 5960-01-076-4708
NSN 6320-01-180-9908
NSN 6240-01-295-8262
NSN 5960-00-951-0568
NSN 6620-01-627-0478
NSN 6110-01-556-4364