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 6110-01-490-3728
NSN 2925-00-845-1480
NSN 5915-00-901-7903
NSN 5925-01-401-5314
NSN 6650-00-565-1659
NSN 6650-00-382-6080
NSN 6650-00-256-4297
NSN 6130-00-182-3006
NSN 5835-00-127-6437
NSN 6110-00-054-2527
NSN 5999-01-317-3990
NSN 5999-01-550-2463