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 6130-00-583-9925
NSN 4140-01-004-2040
NSN 5996-00-875-1644
NSN 5960-01-180-2776
NSN 5930-01-080-5779
NSN 5975-01-276-6791
NSN 5998-01-195-6594
NSN 5960-01-530-8828
NSN 6110-00-636-1234
NSN 7035-01-449-1846
NSN 6130-01-619-5898
NSN 5998-01-608-4909