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 5915-00-351-7355
NSN 6105-01-412-8480
NSN 5996-01-500-2820
NSN 5835-01-381-9565
NSN 6105-01-152-2800
NSN 5996-01-482-5955
NSN 5950-01-507-6954
NSN 6650-01-188-4516
NSN 6220-00-376-2193
NSN 5996-01-031-5101
NSN 6645-00-825-5677
NSN 6135-00-921-6487