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 4140-00-177-0463
NSN 5915-00-857-6309
NSN 5996-00-399-0731
NSN 5910-01-188-8442
NSN 6320-00-098-2858
NSN 6110-01-260-8059
NSN 7035-01-097-5054
NSN 6645-01-113-2525
NSN 5999-01-055-6571
NSN 6145-01-514-0593
NSN 4140-01-254-3689
NSN 4140-00-964-8623