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 6145-01-423-9070
NSN 6645-00-099-6913
NSN 5990-01-400-3299
NSN 5960-01-632-6576
NSN 5985-01-278-7936
NSN 5930-01-116-0890
NSN 7035-01-169-6551
NSN 6320-00-456-0836
NSN 5985-01-384-9807
NSN 5960-00-082-4298
NSN 5999-01-075-5506
NSN 5990-01-540-1619