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 5950-01-532-0260
NSN 5950-01-592-2121
NSN 7035-00-631-3782
NSN 5910-01-189-9247
NSN 5835-01-370-4292
NSN 7035-01-362-4924
NSN 5999-00-357-3643
NSN 5895-01-431-8612
NSN 5996-00-435-0369
NSN 5999-00-094-8110
NSN 5965-01-516-9251
NSN 6220-01-134-4628