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 5990-01-485-0260
NSN 5965-01-621-8547
NSN 5965-01-577-0565
NSN 5915-01-358-8955
NSN 5835-00-804-0569
NSN 5905-01-308-0284
NSN 5965-01-418-1760
NSN 5950-01-627-2777
NSN 6645-01-510-3496
NSN 6650-00-266-6808
NSN 6150-00-701-7880
NSN 5895-01-559-2749