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 6150-01-375-8205
NSN 6145-01-518-3411
NSN 5915-01-575-4832
NSN 6145-01-423-0382
NSN 5996-00-161-4202
NSN 6145-01-262-6935
NSN 5855-01-547-6540
NSN 5945-01-204-8144
NSN 7035-01-347-1689
NSN 5935-00-987-4652
NSN 6650-01-508-3651
NSN 5998-01-097-6319