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 6220-01-444-1889
NSN 5895-01-582-0633
NSN 5960-01-065-0273
NSN 5920-00-681-1172
NSN 5935-01-467-1850
NSN 5945-01-604-8977
NSN 5925-01-514-7048
NSN 5925-01-332-4409
NSN 6110-00-460-7179
NSN 5910-00-409-6036
NSN 6135-00-752-1589
NSN 5996-01-570-8294