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 5975-01-133-5390
NSN 5999-00-639-3447
NSN 5950-01-351-5365
NSN 6220-01-359-3009
NSN 6620-01-035-6501
NSN 5950-01-656-6171
NSN 5945-01-589-2889
NSN 6110-01-542-9110
NSN 5998-01-014-7048
NSN 5996-01-415-1028
NSN 5999-00-892-3872
NSN 5895-01-272-9740