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 5935-01-443-9152
NSN 5965-00-199-4456
NSN 5975-01-185-2304
NSN 5960-01-054-3752
NSN 6110-01-352-1922
NSN 6620-01-290-2973
NSN 5895-01-619-7207
NSN 5895-00-572-8050
NSN 6320-01-433-3953
NSN 6240-01-369-6464
NSN 5975-01-661-3795
NSN 5915-00-866-9739