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 5925-01-600-2173
NSN 5945-01-294-2256
NSN 6130-01-004-3566
NSN 4140-00-012-3506
NSN 7035-00-251-8201
NSN 5945-01-181-3750
NSN 6105-01-408-5149
NSN 5990-00-609-3765
NSN 5895-00-954-8264
NSN 5975-01-211-6594
NSN 6130-01-338-3707
NSN 6650-00-264-0664