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 5996-00-525-1777
NSN 5915-01-168-6570
NSN 5965-01-389-1068
NSN 5996-01-506-0316
NSN 6620-01-477-0123
NSN 5895-00-849-7521
NSN 5999-01-003-0355
NSN 5975-01-618-9272
NSN 6320-01-631-7828
NSN 5990-01-042-1984
NSN 6145-01-141-6809
NSN 5835-01-163-4215