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 6620-00-754-7494
NSN 5925-01-580-0279
NSN 5935-00-258-4600
NSN 5990-01-382-3244
NSN 5895-01-469-6904
NSN 2925-01-316-0725
NSN 5930-01-515-9620
NSN 2925-00-596-9775
NSN 5950-00-934-3289
NSN 6320-01-054-3046
NSN 5910-00-809-4281
NSN 5945-01-615-0388