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 6105-00-845-6986
NSN 2925-01-429-2235
NSN 5998-01-064-2903
NSN 4140-00-455-9645
NSN 5925-01-014-9858
NSN 5835-00-233-6327
NSN 6645-01-386-6311
NSN 6220-01-374-6667
NSN 2925-00-656-3224
NSN 6135-00-998-5884
NSN 6240-01-630-9613
NSN 5985-01-517-9518