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 5835-00-402-8387
NSN 6220-01-067-8142
NSN 6220-01-059-4715
NSN 5945-01-063-8198
NSN 5895-01-091-8363
NSN 5985-00-599-6522
NSN 4140-01-051-0018
NSN 5945-00-517-9566
NSN 5999-01-176-7112
NSN 5985-01-530-2765
NSN 6610-00-797-1417
NSN 6220-00-283-5050