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 5895-01-473-9481
NSN 6320-01-227-2648
NSN 5999-00-186-9314
NSN 5930-01-206-4626
NSN 6320-00-857-4073
NSN 4140-01-516-8995
NSN 6620-01-256-9703
NSN 5910-00-225-9499
NSN 6110-01-218-5257
NSN 5999-01-237-2434
NSN 5950-01-258-4910
NSN 5999-01-012-2449