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 5960-01-013-9346
NSN 6110-01-214-8201
NSN 5975-01-045-1483
NSN 5915-00-994-6022
NSN 5835-01-316-3255
NSN 5990-01-584-8363
NSN 6150-00-411-2063
NSN 6130-01-209-3901
NSN 6110-01-468-0428
NSN 6145-01-461-2750
NSN 6135-01-136-1059
NSN 5835-00-447-1924