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 5835-01-397-2865
NSN 4140-01-497-0266
NSN 4140-01-400-3610
NSN 5855-01-519-2486
NSN 5920-00-261-9848
NSN 6145-01-301-2003
NSN 5915-01-044-1616
NSN 5960-00-315-0358
NSN 5935-01-347-0497
NSN 5998-01-206-5345
NSN 6620-01-386-5914
NSN 6620-01-387-7645