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 6650-00-255-8269
NSN 5915-01-265-3960
NSN 5930-00-665-4923
NSN 5990-01-362-7532
NSN 6135-00-702-2772
NSN 5915-01-124-3505
NSN 5965-00-946-6692
NSN 5960-00-957-0951
NSN 6105-01-411-2922
NSN 6145-00-434-4736
NSN 2925-01-513-9114
NSN 5915-00-351-7355