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 5930-01-028-3995
NSN 5950-01-197-8480
NSN 5895-00-827-2095
NSN 6110-01-633-9660
NSN 5990-01-242-9653
NSN 5998-01-473-4373
NSN 5975-01-445-4854
NSN 5990-00-642-9930
NSN 5960-00-355-4017
NSN 5895-01-435-4386
NSN 5945-01-393-5400
NSN 5895-00-003-9971