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 5945-01-444-2611
NSN 5945-01-349-3296
NSN 6645-00-239-2472
NSN 5905-01-574-5577
NSN 4140-01-208-6568
NSN 6145-00-147-5440
NSN 5965-01-026-9865
NSN 6135-00-835-7211
NSN 5975-01-450-2561
NSN 6610-01-194-1246
NSN 5920-00-935-2275
NSN 5905-00-345-9761