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 5835-00-725-2087
NSN 5915-01-077-4213
NSN 5965-00-316-2768
NSN 5996-01-253-8676
NSN 6150-00-280-4500
NSN 6320-00-116-3658
NSN 6610-01-435-5425
NSN 5990-01-133-0351
NSN 6620-00-907-9756
NSN 6130-00-618-2712
NSN 5960-00-505-1577
NSN 6645-00-819-5045