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 5915-01-050-8214
NSN 5998-01-052-1405
NSN 6130-00-803-4580
NSN 5965-00-630-5416
NSN 6150-00-925-1005
NSN 5930-00-528-7998
NSN 5910-00-684-5014
NSN 6240-01-447-4003
NSN 5895-01-339-7734
NSN 6105-01-406-3627
NSN 6220-01-349-8669
NSN 5950-00-891-2645