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 5996-00-176-0999
NSN 6610-00-727-9918
NSN 5905-01-268-1820
NSN 6650-00-242-0183
NSN 5985-01-361-4410
NSN 5855-01-391-3819
NSN 6620-00-843-5336
NSN 5905-01-290-1903
NSN 4140-01-004-2040
NSN 6650-01-202-0596
NSN 6240-01-449-0300
NSN 5925-01-508-3849