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 5945-01-142-2182
NSN 6240-00-230-2716
NSN 6110-01-582-5478
NSN 5996-01-264-0291
NSN 6220-00-769-4050
NSN 6130-01-520-9209
NSN 5945-00-056-8452
NSN 2925-01-224-1885
NSN 6240-01-023-2013
NSN 5960-01-279-2589
NSN 5925-00-404-9035
NSN 5895-00-493-3114