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 5998-01-109-1828
NSN 6320-00-295-2854
NSN 5960-01-133-0028
NSN 5950-01-481-6864
NSN 5950-00-436-7864
NSN 5998-01-567-0546
NSN 5998-00-762-0435
NSN 5999-01-579-3601
NSN 2925-00-391-0331
NSN 5925-01-606-2393
NSN 6610-01-165-2104
NSN 5835-00-491-3834