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 5925-00-879-5108
NSN 4140-00-245-2715
NSN 5950-01-431-0896
NSN 5910-00-203-2119
NSN 6130-01-239-1254
NSN 5905-01-617-4563
NSN 6610-01-174-1622
NSN 5990-01-147-5225
NSN 5975-01-444-4832
NSN 6110-01-062-9171
NSN 5910-01-016-0127
NSN 6610-00-881-5060