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 2925-01-125-9169
NSN 6320-00-228-5678
NSN 6220-00-756-5772
NSN 5910-01-621-8043
NSN 5930-01-381-7494
NSN 5835-01-557-4914
NSN 5960-01-381-2478
NSN 6220-01-383-3313
NSN 6610-00-208-5318
NSN 2925-01-400-2286
NSN 6105-00-580-1434
NSN 5895-00-482-7335