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 7035-00-064-7008
NSN 5960-00-040-9989
NSN 5998-01-555-8489
NSN 5920-01-650-5417
NSN 5895-01-565-0473
NSN 5835-01-359-2575
NSN 7035-01-411-6062
NSN 6610-01-193-8861
NSN 5835-00-783-6620
NSN 5960-00-924-9627
NSN 5925-01-477-6200
NSN 6320-01-512-2031