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 5950-00-019-2767
NSN 5895-01-464-4990
NSN 5950-01-415-1563
NSN 5998-00-450-1843
NSN 5945-00-168-9401
NSN 2925-01-285-7163
NSN 7035-00-001-4087
NSN 5855-01-262-8013
NSN 5985-01-240-5388
NSN 6610-01-435-5425
NSN 5895-00-248-9111
NSN 6320-01-556-2011