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 5996-01-089-1807
NSN 5999-00-136-2477
NSN 5910-00-330-3577
NSN 6105-01-203-1592
NSN 5910-01-442-8240
NSN 6135-00-519-1325
NSN 6645-00-503-1379
NSN 6620-01-020-4526
NSN 5960-00-274-4905
NSN 6110-01-300-4857
NSN 6145-01-019-6897
NSN 5945-00-116-2714