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 5905-00-431-4143
NSN 6645-01-429-6768
NSN 5996-01-506-9847
NSN 6220-01-359-5296
NSN 6620-01-476-7355
NSN 6240-00-548-3992
NSN 6105-01-375-3708
NSN 6650-01-078-5587
NSN 5950-00-159-8302
NSN 5999-00-584-4577
NSN 6650-01-100-2637
NSN 5996-01-193-3220