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 6620-00-362-2400
NSN 6220-01-599-9098
NSN 5960-01-167-6689
NSN 2925-01-364-7926
NSN 6220-01-631-5917
NSN 6650-00-324-4973
NSN 5998-00-753-7856
NSN 5895-01-439-8107
NSN 6320-01-415-0953
NSN 6240-00-044-5685
NSN 6320-01-539-4789
NSN 5990-01-320-1412