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 6220-01-390-3334
NSN 5915-00-175-8657
NSN 5920-01-301-9646
NSN 5915-01-187-0276
NSN 5945-01-423-1009
NSN 5895-01-449-1371
NSN 5990-00-174-6695
NSN 5975-00-707-6245
NSN 5945-01-363-1963
NSN 6685-00-023-8597
NSN 5935-01-027-3201
NSN 5835-01-399-5820