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 5855-01-619-4411
NSN 5999-00-285-1941
NSN 5925-00-589-8989
NSN 5985-01-478-5089
NSN 7035-01-580-9184
NSN 5935-01-564-2577
NSN 5975-01-176-9007
NSN 5945-00-601-6235
NSN 5905-01-218-3985
NSN 5990-01-213-6319
NSN 6105-01-449-2375
NSN 6145-00-473-8709