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 5999-01-147-5684
NSN 4140-01-571-5717
NSN 5920-01-565-2879
NSN 6610-01-209-5798
NSN 6145-00-212-0422
NSN 5960-00-009-2771
NSN 6110-00-768-7581
NSN 5996-00-456-0895
NSN 6650-01-216-2707
NSN 6620-01-127-5389
NSN 5895-01-383-9868
NSN 6650-01-599-4335