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 6220-00-244-2040
NSN 6110-00-691-7453
NSN 5999-00-419-3141
NSN 5999-00-164-2981
NSN 6610-01-461-8180
NSN 5999-00-272-7453
NSN 6620-01-631-0700
NSN 6645-01-051-1453
NSN 4140-01-634-0330
NSN 5855-01-426-5589
NSN 5945-01-027-8480
NSN 6220-01-602-7025