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 6130-01-131-9369
NSN 5915-00-023-5154
NSN 5999-01-431-8166
NSN 6650-00-688-8587
NSN 5996-01-332-2758
NSN 6135-00-223-9563
NSN 6145-01-595-5171
NSN 6135-01-329-7994
NSN 5990-01-213-6319
NSN 6240-01-467-0751
NSN 5990-01-481-3080
NSN 5915-01-372-7674