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 5960-01-113-4839
NSN 7035-01-091-1929
NSN 5835-01-504-0837
NSN 5950-01-043-7130
NSN 5999-01-420-4737
NSN 5990-00-223-5938
NSN 5935-01-320-0947
NSN 6150-01-207-3170
NSN 6145-01-467-8604
NSN 6145-01-632-0742
NSN 5930-01-473-9921
NSN 6135-01-312-1040