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 5920-00-499-2458
NSN 5965-01-483-4447
NSN 5945-01-406-3200
NSN 5945-00-653-3776
NSN 2925-01-294-9823
NSN 5835-01-359-2575
NSN 5910-00-869-8510
NSN 5930-01-191-9740
NSN 6220-01-146-4469
NSN 6220-01-541-9423
NSN 2925-01-072-7101
NSN 5998-01-440-0452