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 6105-00-901-2455
NSN 5920-01-227-1877
NSN 6685-01-284-4540
NSN 5905-00-448-9747
NSN 6685-00-723-1738
NSN 5990-01-483-7313
NSN 5960-01-495-0859
NSN 6320-01-118-0553
NSN 5950-01-381-3747
NSN 5935-01-025-4505
NSN 6150-01-634-0575
NSN 4140-01-496-6060