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 6320-01-512-2031
NSN 5895-01-371-7392
NSN 5930-00-060-0073
NSN 6620-01-062-4307
NSN 5920-01-514-5912
NSN 4140-01-171-0785
NSN 5915-00-142-6912
NSN 2925-01-197-7864
NSN 6620-01-445-4295
NSN 5999-01-032-0750
NSN 6135-01-553-7711
NSN 6110-01-453-8245