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 6650-01-480-5443
NSN 5945-01-540-5489
NSN 6150-01-363-3629
NSN 5975-01-540-2248
NSN 7035-01-503-2075
NSN 6650-00-433-4929
NSN 5925-00-478-7352
NSN 6105-01-091-8873
NSN 5945-01-075-6528
NSN 6240-01-500-3024
NSN 6220-01-054-2804
NSN 6240-01-481-5638