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 5950-00-935-2428
NSN 5990-01-143-2518
NSN 6650-00-479-7888
NSN 5950-01-389-0228
NSN 2925-01-233-8545
NSN 5950-01-388-3753
NSN 2925-01-320-0965
NSN 5965-01-528-8152
NSN 5996-01-502-9215
NSN 5950-00-137-0673
NSN 5925-01-058-8459
NSN 4140-01-406-5344