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 6130-01-566-4982
NSN 4140-00-806-9952
NSN 5965-00-100-1291
NSN 6130-01-145-7395
NSN 5996-00-161-4202
NSN 4140-01-303-1338
NSN 5895-01-364-0298
NSN 5998-00-971-2170
NSN 2925-00-555-4578
NSN 5965-00-078-7615
NSN 6105-01-347-6173
NSN 4140-01-555-0876