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 5895-00-764-8615
NSN 7035-00-679-9027
NSN 4140-01-117-8772
NSN 5835-00-901-4932
NSN 2925-00-724-9252
NSN 6105-00-969-9864
NSN 6320-01-207-0636
NSN 6320-00-790-4844
NSN 5910-01-561-5049
NSN 5895-01-631-5920
NSN 4140-01-186-6453
NSN 5998-01-149-2000