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 5965-01-173-7521
NSN 5998-01-383-1521
NSN 5999-01-462-8775
NSN 5998-01-276-1088
NSN 6240-01-355-0437
NSN 6650-01-007-4744
NSN 5915-00-221-2391
NSN 7035-01-158-8860
NSN 5920-01-229-8645
NSN 6145-00-280-2154
NSN 5996-00-263-0593
NSN 5945-00-494-1837