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 5920-00-311-3953
NSN 5915-01-654-4812
NSN 5935-01-139-5491
NSN 5985-00-506-2673
NSN 7035-01-458-1963
NSN 5855-01-563-5827
NSN 6685-01-544-8440
NSN 5945-01-126-9967
NSN 5960-00-171-9575
NSN 6685-00-959-4089
NSN 7035-01-432-2424
NSN 6650-00-425-7028