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 5835-01-497-5029
NSN 6145-01-392-3238
NSN 6145-01-634-0388
NSN 6130-01-589-8429
NSN 5960-01-324-8751
NSN 6220-00-299-6077
NSN 5925-01-624-0889
NSN 6610-00-903-6095
NSN 5950-01-432-1331
NSN 5996-00-973-2480
NSN 5930-01-438-2967
NSN 5999-00-831-6098