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 6620-00-115-9050
NSN 5996-00-406-9935
NSN 5935-01-379-1530
NSN 5835-01-276-2808
NSN 5935-01-381-2506
NSN 5835-01-079-1737
NSN 5945-01-238-0111
NSN 5960-00-965-5577
NSN 6645-00-216-6126
NSN 5985-01-236-0263
NSN 5835-00-435-6638
NSN 6610-01-014-3964