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 6320-00-174-1362
NSN 6320-01-177-3192
NSN 5935-01-437-6524
NSN 5999-01-314-1840
NSN 6320-01-611-4918
NSN 5985-00-788-5914
NSN 7035-01-463-3368
NSN 6135-00-497-0491
NSN 6645-01-073-5302
NSN 5935-01-040-8155
NSN 5910-01-400-1778
NSN 7035-00-009-8705