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 5910-01-364-4949
NSN 5950-01-157-8144
NSN 5895-01-158-6357
NSN 2925-01-400-2286
NSN 5835-01-604-7489
NSN 5960-00-045-9266
NSN 5895-01-619-2054
NSN 5935-01-145-4944
NSN 6135-00-221-4720
NSN 4140-01-379-8439
NSN 6110-01-252-5439
NSN 6130-01-496-4246