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 5930-01-349-8443
NSN 6130-00-905-7182
NSN 5910-00-983-0022
NSN 6130-00-395-7220
NSN 5910-01-595-2057
NSN 6135-01-106-7740
NSN 5945-01-434-1059
NSN 5920-00-018-1452
NSN 5975-00-430-1220
NSN 5996-01-534-4700
NSN 5985-00-320-9796
NSN 5950-01-189-7611