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 6240-00-958-6737
NSN 5965-00-434-7617
NSN 6650-01-406-3086
NSN 5905-01-449-1291
NSN 5998-01-069-1754
NSN 7035-01-185-6500
NSN 5945-00-360-6512
NSN 6620-01-004-7072
NSN 5996-00-564-6472
NSN 5960-00-010-5300
NSN 6610-01-212-6464
NSN 6150-00-896-0037