Adapter dust caps are specially designed covers placed on the open ends of unused fiber optic adapters. Their primary purpose is to prevent dust, debris, and other contaminants from entering the adapter and potentially damaging the sensitive fiber end-faces or connectors. Read More Amphenol SMA Adapter or Receptacle Metal Dust Cap & Chain. They can protect fiber optic connectors, fiber optic adapters, optical interfaces of optical modules, and ports of other devices from external environmental pollution and external force damage, preventing severe network deceleration or. Within the fiber optic industry, some say that the are called dust caps because they may be filled with dust. They have mold release on them that.
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