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 5960-01-304-0416
NSN 5920-01-573-0137
NSN 5965-00-362-2158
NSN 6650-01-142-7673
NSN 6220-01-459-8017
NSN 5835-00-121-7558
NSN 6105-00-784-1765
NSN 5915-00-256-6188
NSN 5996-01-562-7347
NSN 6150-01-123-1089
NSN 6145-01-592-2722
NSN 6150-01-399-8612