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 5915-01-151-7614
NSN 5999-01-477-8581
NSN 5910-00-258-0226
NSN 2925-01-219-9471
NSN 6130-00-133-7712
NSN 5975-01-029-3974
NSN 6105-01-449-1046
NSN 5925-01-183-3797
NSN 6645-00-767-6307
NSN 5915-01-062-0592
NSN 5975-01-517-7676
NSN 6610-01-371-3006