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 6150-01-380-9723
NSN 5905-01-531-1762
NSN 5998-00-058-3020
NSN 5950-00-205-2932
NSN 6150-01-583-9905
NSN 6240-01-563-5578
NSN 5960-00-220-9717
NSN 5945-00-244-1579
NSN 6105-01-547-9676
NSN 5965-00-764-1841
NSN 5965-00-064-7209
NSN 5905-01-114-9326