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 6320-01-249-0598
NSN 2925-01-027-1293
NSN 5910-01-137-4948
NSN 6620-00-262-3113
NSN 6150-00-872-6000
NSN 6620-00-167-3825
NSN 5999-01-247-5997
NSN 6240-00-796-8790
NSN 6620-01-618-8075
NSN 6150-00-383-4377
NSN 6135-01-041-3829
NSN 4140-00-930-4673