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 5930-01-534-6327
NSN 5910-01-380-1960
NSN 6110-00-553-1117
NSN 5945-00-491-5218
NSN 5996-00-905-9515
NSN 2925-01-359-4027
NSN 5965-01-447-8821
NSN 5920-01-294-5368
NSN 5950-01-483-6568
NSN 5960-00-728-3459
NSN 6135-00-078-9931
NSN 5950-01-224-4073