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 5998-01-437-6226
NSN 2925-01-323-9835
NSN 6620-01-222-0143
NSN 5960-01-022-7322
NSN 6150-01-456-8109
NSN 5950-00-890-9775
NSN 5895-01-166-3640
NSN 6135-00-938-1351
NSN 5965-00-581-0981
NSN 6145-00-244-4565
NSN 6320-01-486-8004
NSN 5998-00-090-7303