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 5920-01-227-1332
NSN 5910-01-268-9550
NSN 6645-01-212-9474
NSN 6220-01-461-7335
NSN 5990-01-616-9342
NSN 6145-01-411-5895
NSN 6645-00-559-3623
NSN 5895-00-780-0696
NSN 6320-01-441-2438
NSN 5920-01-215-4741
NSN 5999-01-125-2379
NSN 5920-01-374-7663