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 5935-01-447-3633
NSN 5996-01-454-1546
NSN 5990-01-492-0215
NSN 5930-01-193-7364
NSN 5855-00-560-0110
NSN 5960-01-413-3877
NSN 5945-01-257-6108
NSN 5996-01-424-3341
NSN 6610-01-437-0961
NSN 5965-00-953-0072
NSN 5960-01-385-0191
NSN 6220-00-165-7095