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 5835-01-360-2657
NSN 5905-01-474-5173
NSN 6145-01-335-6589
NSN 5915-01-211-4934
NSN 5999-01-619-3042
NSN 5950-01-263-5750
NSN 5996-00-469-0737
NSN 6145-00-982-9666
NSN 5920-00-155-2173
NSN 2925-01-057-6993
NSN 4140-01-366-4034
NSN 6620-01-266-5545