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 6620-00-035-5813
NSN 5960-00-897-2124
NSN 6320-01-054-3046
NSN 5835-01-370-4292
NSN 5920-01-204-6419
NSN 5835-01-359-2575
NSN 6150-01-256-6493
NSN 5975-01-575-5051
NSN 5855-00-782-7714
NSN 6620-00-959-6614
NSN 5895-00-614-5879
NSN 5950-00-142-9078