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 5990-01-581-5103
NSN 6220-01-066-5529
NSN 5998-00-477-7928
NSN 5950-01-590-0875
NSN 5945-00-907-5765
NSN 7035-00-406-0568
NSN 5985-01-472-3504
NSN 7035-01-521-3449
NSN 6135-01-567-0739
NSN 5960-00-281-0824
NSN 5855-00-962-5792
NSN 6645-00-609-7214