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 6610-00-899-7445
NSN 6105-01-055-6569
NSN 5930-01-363-9241
NSN 5915-01-194-7598
NSN 2925-01-316-0725
NSN 6145-01-048-8429
NSN 5996-00-272-2560
NSN 5945-01-225-8298
NSN 6130-00-137-9125
NSN 5960-00-905-5512
NSN 5996-01-023-7896
NSN 6645-01-064-3711