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 6150-01-072-2275
NSN 5990-01-443-2931
NSN 6220-00-366-1670
NSN 6645-01-540-6582
NSN 6610-00-604-0045
NSN 5935-01-421-1469
NSN 6150-01-443-4305
NSN 6145-01-453-9191
NSN 5996-01-017-6762
NSN 6610-01-471-8130
NSN 5950-01-057-0601
NSN 5996-01-579-6558