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 6610-01-457-1974
NSN 5998-01-652-4997
NSN 5925-00-513-7610
NSN 5975-00-096-2720
NSN 5999-01-425-0968
NSN 5999-00-075-3496
NSN 6130-00-811-3799
NSN 5895-00-525-3295
NSN 2925-00-400-2760
NSN 5910-00-447-9529
NSN 6610-01-062-3914
NSN 6620-00-938-1789