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 6110-01-345-4301
NSN 5930-00-915-3464
NSN 6620-01-571-0900
NSN 5915-01-432-2326
NSN 5999-00-089-7995
NSN 5855-01-384-7120
NSN 5960-01-567-1096
NSN 6110-01-345-1574
NSN 5930-00-581-5676
NSN 5935-00-936-7587
NSN 5998-00-862-3118
NSN 6620-01-286-1374