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 5930-01-453-3075
NSN 5945-01-599-1487
NSN 5930-01-521-2600
NSN 5910-00-078-7731
NSN 6610-01-318-6713
NSN 5965-01-416-4059
NSN 5960-01-214-4518
NSN 6620-01-210-9002
NSN 5925-01-432-1698
NSN 5920-00-445-3585
NSN 6645-00-137-7699
NSN 6620-01-609-9513