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 5999-01-510-8567
NSN 6145-01-534-7659
NSN 7035-01-011-3760
NSN 5835-00-794-7500
NSN 5998-00-903-9182
NSN 6150-01-464-4008
NSN 5935-01-189-8497
NSN 5920-00-769-0967
NSN 5925-01-592-4733
NSN 5950-01-425-4005
NSN 5985-01-280-5497
NSN 6610-01-492-2630