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 6685-00-153-0266
NSN 5920-01-092-4233
NSN 5915-01-512-3974
NSN 5996-01-073-6860
NSN 5910-01-527-5064
NSN 5945-01-208-8250
NSN 5930-00-473-2162
NSN 5930-01-185-0424
NSN 5895-01-524-3408
NSN 5910-00-620-4727
NSN 6150-01-444-2456
NSN 2925-01-625-6841