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 5925-01-105-0928
NSN 6645-01-248-8033
NSN 5895-00-927-8002
NSN 5999-00-081-8621
NSN 4140-00-155-8012
NSN 5960-01-013-2587
NSN 6110-01-174-3362
NSN 6105-00-573-6328
NSN 5915-01-477-1890
NSN 5985-01-594-1425
NSN 6105-01-461-3287
NSN 6220-01-462-0236