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 5975-01-005-3734
NSN 6620-00-803-2423
NSN 5855-00-944-0949
NSN 5855-01-569-4057
NSN 5975-01-089-8641
NSN 6650-01-142-6438
NSN 5996-01-425-5937
NSN 5960-01-505-2426
NSN 5975-01-372-6038
NSN 5910-01-227-1939
NSN 6645-01-160-7707
NSN 5999-01-397-7024