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 5905-00-114-2294
NSN 6620-01-147-5615
NSN 5920-01-644-0973
NSN 6130-01-224-7954
NSN 5999-01-291-1401
NSN 6240-00-542-6657
NSN 5996-01-078-1413
NSN 5895-00-827-0240
NSN 4140-00-575-6586
NSN 6240-00-580-0666
NSN 5895-01-122-0606
NSN 4140-01-096-5722