Fiber Adapter (also known as flange) is optical fiber connector of the connecting 

parts, two different adapter port interface, called the hybrid adapters.
Specifications:
 Good inerchangeability
 Environmentally Stable and Reliable
 Accurate Size
 Excellent Return Loss
Application:
CATV, Telecommunicatipn netowrks, test equipmnent, active device /transceiver,

metro, multimedia , premise installation, data processing networks, Gigabit ethernet, 

video
Prameters:
Insertion loss: Singlemode-PC ≤0.3dB  UPC≤0.2dB  APC ≤0.3dB
          Multimode-PC ≤0.5dB  UPC≤0.3dB  APC ≤0.3dB 
Return loss: Singlemode-PC ≥48dB   UPC≥50dB  APC ≥60dB         
          Multimode-PC ≥25dB   UPC≥45dB  APC ≥50dB    
Repeatability: ≤0.1db
durability: 1000matings
Typical change: ≤0.2dB
Operating temperature: -40 to +80℃
Bear tesion: ≥100N