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 6610-00-545-5213
NSN 5950-00-539-7172
NSN 6610-01-383-1830
NSN 5998-01-344-0645
NSN 4140-00-069-1952
NSN 5835-01-178-4154
NSN 6645-00-279-1777
NSN 6150-00-649-8878
NSN 5935-01-578-2279
NSN 5910-00-262-8554
NSN 5935-00-763-7677
NSN 6150-01-382-8440