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 5835-01-447-2544
NSN 6220-00-827-0227
NSN 5895-01-087-6335
NSN 5945-00-584-2046
NSN 5990-00-902-2663
NSN 6620-01-602-8402
NSN 4140-01-386-5630
NSN 6105-01-401-5361
NSN 6220-00-242-7065
NSN 5925-01-422-6783
NSN 5945-01-357-7118
NSN 5925-01-040-4047