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 6220-01-298-2593
NSN 6105-01-277-8455
NSN 6645-01-658-3187
NSN 5945-01-025-1163
NSN 5990-01-540-1619
NSN 7035-01-406-6510
NSN 5935-01-063-7719
NSN 6135-01-390-1841
NSN 6650-01-019-9870
NSN 5835-01-116-2369
NSN 5905-00-494-1817
NSN 5996-01-076-1662