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 6105-01-128-0835
NSN 5920-01-180-8307
NSN 5960-00-389-2915
NSN 6135-01-426-8282
NSN 5945-00-481-4876
NSN 6150-01-650-9466
NSN 5999-00-764-7320
NSN 6620-01-057-9621
NSN 5996-00-079-1268
NSN 5990-00-226-7894
NSN 5895-01-028-3361
NSN 5960-01-127-0246