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 6610-01-473-0521
NSN 5950-01-482-1532
NSN 5975-01-080-7455
NSN 5945-00-958-5071
NSN 5835-01-463-2334
NSN 5905-00-447-0706
NSN 7035-00-096-9986
NSN 5998-01-509-1171
NSN 5996-01-089-5339
NSN 6240-01-605-8096
NSN 5965-01-546-4628
NSN 5998-00-989-9123