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 5920-01-435-6052
NSN 5996-01-023-7896
NSN 5930-00-960-7223
NSN 5998-01-310-8739
NSN 6620-01-376-9182
NSN 5855-00-763-2155
NSN 5920-01-175-5714
NSN 5855-01-188-4049
NSN 5925-01-535-1318
NSN 5975-00-818-9140
NSN 5925-01-286-5127
NSN 5835-01-158-6878