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 5930-01-145-0525
NSN 6145-01-597-1843
NSN 5945-01-357-9413
NSN 5950-01-355-0403
NSN 5985-00-358-1553
NSN 6620-01-627-0478
NSN 6110-00-802-9557
NSN 5965-01-216-1994
NSN 5975-01-353-7349
NSN 5920-01-190-3176
NSN 5945-01-283-9062
NSN 6150-00-753-3950