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 6650-01-527-2610
NSN 4140-01-513-5168
NSN 6240-01-152-1084
NSN 6645-01-064-3711
NSN 4140-00-272-0943
NSN 5965-01-176-9052
NSN 5835-01-535-0948
NSN 6650-00-074-2445
NSN 6240-01-301-8668
NSN 5960-01-339-3037
NSN 6220-00-595-6954
NSN 5945-01-018-7097