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 5855-01-474-6456
NSN 6610-01-384-1587
NSN 5905-01-243-8331
NSN 5990-00-905-4624
NSN 5930-01-650-9408
NSN 6150-00-260-6293
NSN 5915-01-435-7893
NSN 4140-00-518-2744
NSN 5950-01-242-9417
NSN 5935-01-445-6629
NSN 4140-01-197-0406
NSN 6650-01-391-6461