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 5920-01-024-0592
NSN 5835-01-526-8854
NSN 6130-01-341-5124
NSN 5905-01-468-6057
NSN 5935-01-432-4618
NSN 6130-00-482-9845
NSN 5925-01-634-0664
NSN 6610-00-561-0484
NSN 5975-00-383-7679
NSN 5998-00-261-3355
NSN 2925-00-203-8735
NSN 5835-00-237-2879