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 5910-01-530-5037
NSN 5950-01-200-1711
NSN 5999-00-346-5092
NSN 5920-00-838-4683
NSN 6130-01-632-3197
NSN 6105-01-555-8757
NSN 5915-01-317-6176
NSN 5960-00-246-4623
NSN 6320-01-232-4664
NSN 6110-01-398-1507
NSN 5945-00-001-6988
NSN 5895-00-971-2288