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 5975-00-818-2569
NSN 6650-01-186-5762
NSN 6650-01-187-0205
NSN 6620-00-862-5567
NSN 6620-00-199-8734
NSN 5999-01-548-9423
NSN 6110-01-134-1685
NSN 7035-01-204-7481
NSN 5915-01-278-9176
NSN 7035-00-897-7567
NSN 5920-01-303-0240
NSN 6620-00-349-4703