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 5996-01-648-0405
NSN 2925-01-424-0235
NSN 6620-00-901-7848
NSN 5915-01-300-8811
NSN 6105-01-481-3763
NSN 6650-01-069-2501
NSN 5998-01-157-2447
NSN 5915-00-060-0077
NSN 6150-01-360-6211
NSN 5920-00-421-0991
NSN 5950-00-618-0024
NSN 5985-01-371-5512