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 5975-01-508-0597
NSN 6130-00-789-1884
NSN 6620-00-424-4335
NSN 5895-01-542-9039
NSN 5975-01-331-8196
NSN 5965-01-577-5147
NSN 5998-00-231-0365
NSN 5915-00-514-2098
NSN 6145-01-427-9844
NSN 6240-01-398-6049
NSN 6610-00-382-0266
NSN 5855-01-444-5248