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 5915-00-101-2782
NSN 5996-01-057-1981
NSN 5998-01-445-0690
NSN 5960-00-453-7846
NSN 6620-01-469-7828
NSN 6150-00-466-2892
NSN 6145-01-278-0593
NSN 5945-00-253-5200
NSN 2925-01-633-4048
NSN 6150-01-121-2194
NSN 5895-00-444-0823
NSN 5996-01-377-3743