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 5990-01-645-2592
NSN 6105-00-943-5183
NSN 6645-01-455-1293
NSN 5965-01-073-1014
NSN 6320-01-370-4218
NSN 6645-00-392-8728
NSN 5895-00-432-7934
NSN 6645-01-040-8337
NSN 5990-00-741-9775
NSN 5855-00-451-6155
NSN 5996-00-212-5917
NSN 5996-01-467-2177