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 5925-00-764-8349
NSN 5925-00-984-3319
NSN 6220-01-025-1373
NSN 2925-00-555-8836
NSN 6320-01-225-9963
NSN 5950-01-440-8959
NSN 6145-01-285-1120
NSN 6145-00-647-3660
NSN 6320-01-283-1300
NSN 5996-01-630-8108
NSN 5996-00-279-1510
NSN 6650-01-549-5838