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 6685-00-466-0723
NSN 5985-01-206-5827
NSN 5975-00-732-4175
NSN 6135-01-421-3189
NSN 5920-01-527-0961
NSN 5910-01-480-8577
NSN 5915-00-731-1748
NSN 5945-00-398-1072
NSN 5960-01-381-2478
NSN 6320-01-340-4112
NSN 4140-00-707-5963
NSN 6320-01-006-6138