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 6145-01-547-5728
NSN 6110-01-211-4232
NSN 6320-00-343-1798
NSN 5998-00-760-7399
NSN 5975-00-153-0050
NSN 5935-01-062-7376
NSN 5835-01-009-9173
NSN 6135-01-308-5688
NSN 2925-01-520-4194
NSN 6610-01-502-7106
NSN 5950-01-215-1500
NSN 6105-01-352-0058