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 5975-00-636-4910
NSN 5950-01-305-7418
NSN 7035-00-048-3723
NSN 6110-01-255-1712
NSN 5935-01-140-4335
NSN 5996-01-337-3516
NSN 7035-01-330-4799
NSN 6240-00-212-4305
NSN 5998-01-563-6349
NSN 6240-01-196-1688
NSN 4140-00-099-9205
NSN 6105-01-160-8599