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 6240-01-531-2661
NSN 6220-01-003-9126
NSN 5996-01-436-3322
NSN 6105-00-971-8295
NSN 6105-01-423-0136
NSN 6145-00-574-1152
NSN 5920-00-259-7294
NSN 5895-01-364-2464
NSN 5990-00-611-1661
NSN 6320-00-994-0179
NSN 6220-01-310-8741
NSN 5960-01-013-9346