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 5915-00-278-5561
NSN 5855-00-004-0904
NSN 6610-01-528-5750
NSN 6240-01-305-6933
NSN 7035-01-291-6468
NSN 5910-00-007-5236
NSN 5910-01-221-0085
NSN 5895-01-003-6338
NSN 5960-00-491-6580
NSN 6220-01-386-5150
NSN 5910-01-411-5309
NSN 5945-00-865-0375