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 5915-01-506-1886
NSN 5920-01-231-3615
NSN 5945-00-942-4907
NSN 5960-00-148-4493
NSN 5910-01-096-8511
NSN 5925-01-534-9013
NSN 6130-01-186-2035
NSN 6145-00-162-7922
NSN 5985-01-440-9350
NSN 5998-01-472-7855
NSN 5985-01-150-2700
NSN 6650-00-202-4540