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 5935-01-382-4186
NSN 5935-01-556-8071
NSN 5945-01-344-7522
NSN 5895-00-590-8726
NSN 5945-00-981-2151
NSN 4140-01-644-5478
NSN 5999-01-371-3169
NSN 5835-00-253-3453
NSN 6650-00-299-1839
NSN 6220-00-891-8786
NSN 5935-00-132-6802
NSN 6610-01-119-7873