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 5835-00-546-4898
NSN 5930-01-452-2473
NSN 6135-01-486-1443
NSN 5920-01-176-5426
NSN 6240-00-391-6402
NSN 5910-01-103-4725
NSN 6145-01-250-0689
NSN 7035-00-946-2642
NSN 5855-00-058-1293
NSN 7035-00-631-3782
NSN 5915-00-025-1763
NSN 6130-01-138-9055