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 6610-01-444-4001
NSN 5996-01-208-7862
NSN 6685-00-944-6899
NSN 5935-00-288-5973
NSN 5950-01-449-3502
NSN 5996-01-381-1997
NSN 5920-01-348-2234
NSN 6150-00-295-5714
NSN 5975-01-519-8899
NSN 6145-01-360-5863
NSN 5920-00-983-3571
NSN 5920-01-395-4209