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 5975-01-056-5514
NSN 5895-01-014-4524
NSN 7035-00-225-6499
NSN 5945-01-437-6240
NSN 6240-01-559-9117
NSN 4140-01-490-2647
NSN 5935-00-549-7837
NSN 6135-01-222-0703
NSN 6620-01-467-2111
NSN 7035-01-617-0072
NSN 6105-01-424-6439
NSN 6135-01-265-1384