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 5990-01-386-3040
NSN 2925-01-205-4584
NSN 6110-01-568-9857
NSN 5990-01-033-1423
NSN 2925-01-184-5201
NSN 5950-00-584-0145
NSN 5950-01-468-3029
NSN 6620-01-534-0898
NSN 5915-01-369-0512
NSN 5855-01-590-9103
NSN 6320-00-116-3658
NSN 6150-01-632-4371