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 5996-01-600-2563
NSN 6610-00-504-2839
NSN 6220-01-367-2923
NSN 6320-01-082-2970
NSN 6650-00-255-8269
NSN 6645-01-087-7345
NSN 5915-01-345-8614
NSN 5998-01-509-7156
NSN 5930-01-422-1195
NSN 5835-01-362-8367
NSN 6110-01-461-2301
NSN 5975-01-577-5406