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 6130-00-891-8800
NSN 5998-01-420-9115
NSN 5895-00-869-7693
NSN 5935-01-247-3864
NSN 5950-01-417-5599
NSN 5985-01-427-9852
NSN 5998-00-899-7002
NSN 5985-01-281-8483
NSN 5960-01-543-0235
NSN 5905-00-186-0942
NSN 6145-00-490-9180
NSN 5920-01-445-4767