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 5985-00-170-6768
NSN 5996-01-590-7885
NSN 6320-00-459-8973
NSN 5965-00-553-6898
NSN 5920-01-208-8794
NSN 6130-01-546-9261
NSN 5965-00-768-4366
NSN 5975-00-088-5127
NSN 5945-01-163-8683
NSN 6620-00-075-6667
NSN 6685-01-464-8406
NSN 5930-00-618-8602