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 6645-01-025-1002
NSN 5965-00-139-4870
NSN 5945-01-609-0546
NSN 6650-01-512-9650
NSN 6110-00-496-0532
NSN 5905-01-601-1775
NSN 5999-00-962-8562
NSN 5895-00-686-2029
NSN 5945-00-564-4043
NSN 5950-00-931-8056
NSN 5965-01-023-7095
NSN 5999-01-314-6635