Masterbond Thermoset Epoxy

Technical datasheet

UV25

Supplied byMaster Bond- Last Updated on Oct 15, 2025

UV25 by Master Bond is a one-part, low VOC, UV curable system. It has medium viscosity and cures fast without oxygen inhibition. It offers optical clarity, electrical insulation and high glass transition temperature. It also offers temperature and chemicals resistance.
  • It bonds well to glass, surface treated metals and plastics such as polycarbonates and acrylics.
  • It exhibits good mechanical properties including good adhesion and low shrinkage.
  • It can also be used as a coating, bonding, sealant or encapsulant.
  • Suitable for aerospace, electronics, optical and specialty OEM applications.
  • It has a shelf life of 6 months.
  • UV25 is RoHS compliant and meets NASA Low Outgassing specifications and withstands 100 hours at 85°C/85%RH humidity testing.
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Sealants

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UV25 properties

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PropertiesValue & unitTest conditionTest method
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Glass Transition Temperature (Tg)0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Shore D0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Shore D0.0 Visible After LoginVisible After LoginVisible After Login
Refractive Index0.0 Visible After LoginVisible After LoginVisible After Login
Service Temperature0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength0.0 Visible After LoginVisible After LoginVisible After Login
Viscosity0.0 Visible After LoginVisible After LoginVisible After Login
Volume Resistivity0.0 Visible After LoginVisible After LoginVisible After Login

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