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 5960-01-226-7297
NSN 5930-00-161-3991
NSN 5945-01-052-6794
NSN 6110-01-579-2924
NSN 6150-00-962-8622
NSN 5950-01-429-7764
NSN 5930-01-420-1490
NSN 6145-01-100-7104
NSN 6105-00-083-0520
NSN 6685-00-003-6291
NSN 6620-01-632-9143
NSN 6220-01-444-0945