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 6645-01-633-1852
NSN 5835-01-038-8459
NSN 5935-01-608-5840
NSN 5996-01-054-1609
NSN 6645-00-315-9254
NSN 5930-01-316-3995
NSN 5960-01-040-0934
NSN 5915-00-191-9360
NSN 5945-01-037-8644
NSN 5999-01-217-8812
NSN 5999-00-999-1869
NSN 5915-00-503-0108