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 5945-01-131-3787
NSN 5855-01-245-8689
NSN 6610-01-506-7887
NSN 6620-01-292-5072
NSN 6620-01-298-3806
NSN 6130-00-159-1104
NSN 5990-01-532-0670
NSN 5960-01-106-1491
NSN 5915-01-615-3430
NSN 5950-01-540-9459
NSN 5985-00-865-9443
NSN 5999-00-549-9955