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 5960-00-308-9123
NSN 5835-00-163-5111
NSN 4140-01-651-6462
NSN 5945-01-348-7996
NSN 6145-01-429-8529
NSN 6105-00-430-2378
NSN 6110-01-290-4289
NSN 6645-01-567-2968
NSN 5925-00-529-3950
NSN 6110-01-498-7956
NSN 5998-00-596-9568
NSN 5915-01-034-2316