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 5930-00-905-6999
NSN 6620-00-189-0967
NSN 6610-01-406-4985
NSN 5960-00-658-2780
NSN 6150-00-475-5383
NSN 5915-00-504-9416
NSN 6135-01-098-3020
NSN 5985-01-076-9330
NSN 5920-01-483-7632
NSN 5835-00-898-0201
NSN 6150-01-095-1750
NSN 5998-00-086-9876