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 5965-00-594-3115
NSN 6105-01-497-0507
NSN 4140-00-229-8467
NSN 5945-00-075-0424
NSN 6105-01-487-7484
NSN 5930-00-974-1850
NSN 6610-01-261-6102
NSN 5835-01-347-8714
NSN 5905-01-021-1588
NSN 6645-01-632-2272
NSN 5975-01-485-5749
NSN 6220-01-369-9927