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 6620-00-920-1671
NSN 6240-01-033-6941
NSN 6130-00-900-4758
NSN 4140-01-631-4447
NSN 5855-01-392-3734
NSN 5925-00-156-4044
NSN 5910-00-379-2349
NSN 6610-01-526-2054
NSN 5965-00-372-2537
NSN 5910-01-315-8868
NSN 5930-00-919-0683
NSN 5895-00-707-6663