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 5835-00-005-7909
NSN 6610-00-164-1510
NSN 6645-00-888-5820
NSN 6645-00-602-5968
NSN 6110-00-508-5892
NSN 5855-00-862-3345
NSN 5905-00-248-4584
NSN 6220-00-871-8163
NSN 5915-01-406-4637
NSN 6135-01-517-5058
NSN 6110-00-075-5660
NSN 5835-01-362-8367