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 6685-01-058-5998
NSN 6610-01-448-8904
NSN 6135-00-503-7213
NSN 5895-01-633-7162
NSN 5999-00-377-3765
NSN 5998-01-546-9923
NSN 5965-01-629-4663
NSN 5998-00-118-7555
NSN 6150-01-154-8613
NSN 5960-01-462-1864
NSN 6145-01-327-9784
NSN 5950-01-418-0266