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 5990-01-489-0366
NSN 5920-01-331-3199
NSN 6240-01-528-1585
NSN 5950-01-250-3376
NSN 5998-01-046-0336
NSN 5835-00-061-5717
NSN 5945-00-216-7432
NSN 5985-01-022-5891
NSN 5950-01-119-4201
NSN 5975-00-456-0627
NSN 5915-01-515-8454
NSN 5965-01-352-1951