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 6130-00-621-7997
NSN 5999-00-984-3338
NSN 6220-01-624-5047
NSN 6130-01-506-4543
NSN 5996-01-495-4331
NSN 5960-01-033-8015
NSN 5855-01-416-5085
NSN 6110-00-227-8855
NSN 6610-01-343-7614
NSN 5935-01-328-7995
NSN 6645-00-151-5280
NSN 5990-01-425-2175