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 5999-01-179-8148
NSN 6620-01-526-2857
NSN 2925-00-714-3932
NSN 5996-00-011-3701
NSN 5925-01-068-2887
NSN 6135-01-588-2662
NSN 5945-01-521-2008
NSN 6135-00-793-1809
NSN 5910-00-354-5600
NSN 5935-01-062-0705
NSN 6610-00-128-7780
NSN 5910-01-347-2934