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 5915-01-370-4957
NSN 6645-00-806-6961
NSN 5945-01-542-1780
NSN 5996-01-379-7978
NSN 5835-00-160-7142
NSN 5920-01-592-5224
NSN 6150-01-409-0853
NSN 6610-01-617-9788
NSN 5990-00-127-2306
NSN 7035-01-123-8723
NSN 4140-00-983-4083
NSN 6620-00-246-5159