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 5996-00-005-0222
NSN 5945-01-562-8877
NSN 5925-01-472-1213
NSN 5920-00-291-1379
NSN 7035-01-336-0464
NSN 5835-01-177-1092
NSN 5930-01-275-2878
NSN 6105-00-739-7040
NSN 5930-01-445-9793
NSN 5930-01-275-0788
NSN 6620-01-406-3584
NSN 5930-01-286-0322