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 4140-01-216-0008
NSN 6620-01-060-3086
NSN 5945-01-077-1148
NSN 5915-01-587-8086
NSN 5965-01-496-1633
NSN 6135-00-422-3967
NSN 5935-01-504-6440
NSN 5960-00-001-3109
NSN 5998-01-644-0340
NSN 6150-01-514-2534
NSN 5998-01-465-3927
NSN 6135-00-583-3966