High Performance Sealing Assemblies (FSA)

Featured Product from Conax Technologies

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Conax Technologies has adapted our proven soft sealant capability to include the ability to compress a soft sealant material around the outside diameter of a fiber optic cable. The fiber optic cable is encased within a rugged stainless steel sheath that protects the cable from damage during the sealing process. This sheath is then placed through a sealing gland. This process allows the fiber optic cable to be sealed without the use of epoxies and with minimal out-gassing.

The fiber optic feedthrough sub-assembly can be used with various Conax Technologies sealing glands, including multiple hole fittings and can be adapted for special applications.


  • Wide range of connector terminations: ST, SMA, FC, FC/APC, FC/PC and SC/APC
  • Standard fiber core sizes: 8.3, 62.5, 100, 200, 400, 600, 700 micron & larger
  • Adaptable to customer-supplied fiber
  • Can seal outside jacket diameters from 400 to 1040 microns
  • Protection Tubing: Standard furcation tube (black in color) is constructed of a polypropylene inner tube with a dried Kevlar¨ Aramid yarn strength member and a 3.0 mm outer polyethylene jacket.
  • Models FSA2 and FSA4 are available with a low-outgassing furcation tube. Please specify FSA2B or FSA4B for this feature.


  • Rugged construction
  • Fiber optic cable is protected inside the sheath
  • Uses low outgassing materials


  • Helium Leak Rate: 1 x 10-6 scc/sec typical
  • Transmission Loss: Less than 0.3db typical (not including connectors)
  • Pressure Rating: 1000 psig (70 bar) standard, up to 3000 (207 bar) psig optional
  • Temperature Rating: -4° F to +185° F (-20° C to +85° C) Higher temperature models are available in some configurations. Please consult factory.