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 6650-01-556-3508
NSN 5960-00-882-0183
NSN 4140-00-504-1829
NSN 5925-00-133-5365
NSN 6150-01-519-9309
NSN 7035-01-091-1929
NSN 5920-01-578-0665
NSN 5998-01-421-1417
NSN 5996-01-483-1032
NSN 5835-01-172-5884
NSN 5915-01-360-7457
NSN 6130-01-357-1612