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 5930-00-815-4161
NSN 5835-01-131-2027
NSN 5915-00-771-1645
NSN 5945-01-571-8903
NSN 5990-00-877-8957
NSN 5985-01-075-6003
NSN 5990-01-507-1479
NSN 5920-01-246-0706
NSN 6105-00-696-5606
NSN 5996-01-399-6677
NSN 6240-01-057-9708
NSN 2925-01-633-4048