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 5945-01-631-0175
NSN 6150-00-194-3098
NSN 5990-01-347-6080
NSN 5945-01-392-3583
NSN 4140-00-952-4047
NSN 5960-01-518-4440
NSN 5998-01-407-4720
NSN 5999-01-634-0576
NSN 6620-01-384-2105
NSN 6320-01-155-8295
NSN 5925-01-336-1928
NSN 5895-01-275-9412