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 5990-00-727-0723
NSN 6650-00-170-5095
NSN 5945-01-486-6977
NSN 5855-01-590-6240
NSN 6240-01-582-0168
NSN 5996-01-240-4381
NSN 5950-00-436-0944
NSN 5920-00-987-1605
NSN 5960-00-254-4271
NSN 2925-01-315-1714
NSN 6320-01-129-9656
NSN 6220-01-108-1113