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 5945-01-132-4189
NSN 5905-01-600-0179
NSN 6135-01-278-9717
NSN 5965-01-332-9825
NSN 6240-00-682-3508
NSN 5950-01-188-4333
NSN 5965-01-332-6693
NSN 6130-01-161-1735
NSN 5835-01-203-8295
NSN 4140-00-012-3506
NSN 6650-01-481-8009
NSN 5950-01-033-9290