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 5945-00-687-2072
NSN 5998-01-392-2249
NSN 5975-01-019-7265
NSN 6145-01-023-0823
NSN 5996-00-409-2063
NSN 6110-00-769-6537
NSN 6610-01-612-4611
NSN 6135-00-377-9165
NSN 6320-01-056-1164
NSN 5910-01-051-5034
NSN 5935-01-483-9710
NSN 5920-01-029-7565