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 5835-01-512-4834
NSN 5910-01-484-4869
NSN 6220-00-887-2637
NSN 5965-01-062-3492
NSN 6145-01-634-0388
NSN 5915-01-395-0090
NSN 5930-00-608-9621
NSN 7035-00-631-3782
NSN 6620-01-179-0779
NSN 5835-01-326-6104
NSN 5855-01-159-1654
NSN 6220-01-216-0678