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 6620-01-316-7907
NSN 5945-00-369-7707
NSN 5975-00-102-7425
NSN 5985-00-189-0953
NSN 7035-01-411-6062
NSN 5930-01-348-1279
NSN 5965-01-229-8721
NSN 2925-01-486-4210
NSN 6610-01-250-2811
NSN 5950-01-584-2708
NSN 6105-01-100-1007
NSN 5945-00-515-2667