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 5975-00-272-2913
NSN 6650-00-717-8913
NSN 5855-01-258-5161
NSN 6610-01-260-6320
NSN 5985-01-434-5091
NSN 5835-01-060-6868
NSN 6620-01-412-5514
NSN 5950-00-549-1129
NSN 5930-01-106-8662
NSN 5935-01-059-5593
NSN 6130-01-398-3313
NSN 5895-01-447-2748