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 5935-00-149-1485
NSN 6135-00-995-1089
NSN 5910-00-351-8768
NSN 5996-01-496-3180
NSN 6320-00-098-2858
NSN 5920-00-357-0260
NSN 6620-01-299-8949
NSN 6145-00-781-0018
NSN 5998-01-441-0068
NSN 5999-01-207-8416
NSN 6650-01-087-7921
NSN 7035-01-226-2545