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 6320-00-139-1090
NSN 5935-00-901-9455
NSN 5945-00-789-8596
NSN 6110-01-113-7642
NSN 6620-00-580-3499
NSN 5975-01-169-1566
NSN 5910-01-224-9607
NSN 5960-01-444-2205
NSN 6150-00-404-7875
NSN 5999-01-600-0153
NSN 6220-01-170-0694
NSN 5996-00-713-4013