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 6620-01-642-4218
NSN 5960-00-722-4909
NSN 4140-01-006-8642
NSN 6220-01-268-0570
NSN 5998-01-295-1055
NSN 5930-01-622-4839
NSN 5835-00-133-0599
NSN 6320-01-204-2922
NSN 5950-00-391-6963
NSN 6220-00-997-9073
NSN 6150-00-452-1086
NSN 5960-01-278-9394