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 5930-00-925-8246
NSN 5935-00-196-8928
NSN 4140-01-249-4450
NSN 4140-00-686-4894
NSN 6105-01-441-5509
NSN 6110-01-302-5699
NSN 6645-01-540-7989
NSN 5915-00-012-1593
NSN 5910-00-960-8659
NSN 5895-01-104-1848
NSN 4140-00-823-4438
NSN 5990-00-382-5885