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 5999-00-057-2929
NSN 5950-00-344-8313
NSN 6130-00-514-1177
NSN 6645-01-277-5973
NSN 5920-00-042-9165
NSN 5835-01-325-5677
NSN 5990-01-489-0366
NSN 2925-01-583-4255
NSN 6105-01-542-4117
NSN 5835-01-046-5632
NSN 6645-01-329-8151
NSN 5945-01-531-3084