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 6150-01-514-1840
NSN 5990-01-262-4068
NSN 5915-01-123-6619
NSN 5960-01-231-1450
NSN 5985-00-553-9735
NSN 5998-01-284-0550
NSN 6105-01-661-2124
NSN 6110-01-223-5367
NSN 5998-01-032-8130
NSN 5975-00-813-9805
NSN 4140-00-848-6245
NSN 6220-01-343-2204