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 7035-01-227-7492
NSN 5996-00-186-8709
NSN 5935-01-317-7847
NSN 6620-01-004-7072
NSN 6320-01-425-1417
NSN 6145-01-399-0467
NSN 6610-01-064-0384
NSN 5960-00-699-8146
NSN 5895-00-153-9445
NSN 6130-01-395-4929
NSN 2925-01-244-3016
NSN 6110-01-093-5825