Fiber Optic Adhesives – Bonding, Sealing, Coating Compounds Specifically for the Fiber Optic Industry

Master Bond Inc. offers the widest selection of epoxies, silicones, polyurethanes and UV cures specifically designed for fiber optic applications. We have developed many innovative compounds to meet challenging fiber optic performance and processing requirements. Specific Master Bond grades offer:

  • High optical clarity - Excellent light transmission characteristics
  • Superior durability
  • Excellent adhesion
  • NASA low outgassing approval
  • Electrical and thermal conductivity
  • Easy removability
  • Low stress properties
  • Exceptional chemical and water resistance
  • High temperature and low temperature/cryogenic serviceability
  • Withstand exposure to vibration, impact and shock
  • Non-yellowing
  • Abrasion resistance

Products by Type and Use

Products By Type

  • One Part Epoxy Systems
  • Two Part Epoxy Systems
  • One Part Silicone Systems
  • Two Part Silicone Systems
  • UV Curable Systems

Products By Use

  • Potting & Encapsulation Materials
  • Conformal Coatings
  • Industrial Sealants
  • Industrial Adhesives
  • High Temperature Resistant Products
  • Low Outgassing Products

Most Popular Products


  • One part heat cured system with long working life for glass fiber potting and bonding fibers to connectors.


  • This optically clear two part low viscosity system used for bonding fibers to connectors may also be employed to cast optically clear castings. Refractive index of 1.55.


  • Optically clear, one part UV cured low viscosity adhesive, sealant, and coating cures up to 1/8 inch thickness. Excellent resistance to water; is used for potting fibers as well as bonding fibers to connectors.

Master Bond Products are Used in a Wide Range of Fiber Optic Applications

  • To alleviate core cracking during termination processes
  • Fiber splicing and recoating
  • Potting glass fibers
  • Fixturing fiber optic couplings
  • For sealing of fiber optic devices
  • Connector backfills
  • Potting fiber optic connectors for polishing
  • Casting of high performance optical components
  • Protecting sensitive optical assemblies
  • Gap coupling between prisms and waveguides
  • Electro optic systems and lens assemblies
  • Assembly lines utilizing fiber optic machinery
  • Semi conductor packaging and assembly
  • Pig tailing- (the attachment of an input or output fiber)
  • Bonding fiber optic bundles and gratings, as well as fibers inside connector ferrules
  • Termination of single or multichannel fiber optic connectors (fiber optic termination)
  • Bonding of fiber optic magnetometers
  • Laminating fiber optic couplings
  • Endoscope manufacture and repair
  • Encapsulation of optical components
  • Fiber optic space flight cable harnesses
  • LED die attach and encapsulants
  • LCD glass laminations
  • Wafer bonding of CSP (Chip Scale Packaging)
  • Fabrication of MEM devices (micro electromechanical systems)
  • For use with MEM die attach
  • Flip Chip Underfill
  • Down-hole petrochemical fiber optic sensors
  • For assembly of high speed MT (Mount) connectors
  • For Perimeter seal of OLED (Organic Light Emitting Diode)
  • CCD (Charged Coupled Device) and CMOS (Complimentary Metal Oxide Semiconductor) Lid Sealing
  • Die attach to ITO
  • Void filling in cables
  • Cryogenic Fiber Optic Temperature Sensors
  • Piezoelectric micro valve
  • Eliminating cracking of the glass core in multi- mode constructed optical fibers.
  • In V-Groove Array assemblies to yield excellent accuracy of fiber core position
  • Optical wave guide

Packaged The Way You Need It

Master Bond offers a wide array of packaging options meant to speed productivity, minimize waste and save energy.

  • Quantities from grams to gallons
  • Cans, bottles and jars
  • Cartridges for manual and pneumatic guns
  • Premixed and frozen syringes
  • Bipaks for field service kits

New Adhesives for Fiber Optic Applications


  • Low viscosity epoxy meets NASA low outgassing specifications
  • Superior dimensional stability
  • Cures at room temperature
  • Ideal for high performance systems


  • Two part, low viscosity epoxy cures at room temperature
  • Excellent optical clarity and non-yellowing properties
  • Rapid curing in thin sections


  • Ultra-fast room temperature curing epoxy adhesives
  • Tg over 125°c
  • Service temperature range -60° F to +400°F
  • NASA low outgassing approved


  • UV curable epoxy resin compound with enhanced thermal stability and exceptional low shrinkage upon cure
  • Superb chemical resistance
  • Excellent electrical insulation properties

Epoxy and UV Cure Systems for Optical, Electro-Optical, Fiber Optic, & Laser Products by Master Bond

The Master Bond product line includes both one and two component epoxy resin compounds and one component UV curable compositions. The epoxy resin compounds are all specially formulated to maximize resistance to liquid water, water vapor and other adverse environments. Some of the outstanding features of the optical systems offered by Master Bond are excellent light transmission characteristics and superior non-yellowing properties; all along with a wide range of systems where the index of refraction ranges from a relatively low 1.43 up to 1.61. It should be noted that the ultraviolet compositions cure tack free in the presence of air. All Master Bond products have been carefully processed to exclude such potentially objectionable contaminants as chlorine and other halogens as well as sodium and related elements. They provide innovative solutions to the many processing problems of these industries and virtually eliminate quality control difficulties caused by corrosion and other environmentally induced conditions.

Typical applications range from bonding and potting fiber-optic cables, connectors and terminations, and upgrading the vibration and shock resistance of electro-optic assemblies. Other applications include cementing and coating optical parts, potting LED devices, optical replications, bonding ferrules and connectors, and coating or encapsulating a wide variety of electro-optic and laser components.

This information has been sourced, reviewed and adapted from materials provided by Master Bond Inc.

For more information on this source, please visit Master Bond Inc.


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