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 5950-00-587-9601
NSN 5920-01-386-4156
NSN 5905-01-098-3006
NSN 5835-01-258-5597
NSN 5920-01-052-3339
NSN 5945-00-113-8329
NSN 6145-00-448-1636
NSN 6220-01-459-1999
NSN 5945-00-925-2055
NSN 5950-00-120-8497
NSN 6320-00-925-0558
NSN 5998-01-024-9741