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 5895-01-632-2542
NSN 6650-01-209-2409
NSN 2925-01-263-3638
NSN 2925-00-314-0252
NSN 5998-00-218-1360
NSN 5950-00-134-2944
NSN 5960-00-813-4520
NSN 6650-01-014-4581
NSN 5835-00-135-4566
NSN 6220-00-528-7752
NSN 5945-00-905-7288
NSN 5985-00-985-6159