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 5920-01-141-1741
NSN 5950-00-038-7761
NSN 5945-01-411-9732
NSN 2925-00-580-4931
NSN 5915-01-170-0509
NSN 5960-01-335-5238
NSN 5998-01-235-2639
NSN 5925-01-548-6875
NSN 6105-00-559-2220
NSN 6105-01-615-4935
NSN 5935-00-937-6996
NSN 5855-00-411-8688