Two component epoxy adhesive, sealant, coating and casting system

Key Features

  • Remarkable chemical resistance
  • Resists up to +450°F
  • Meets NASA low outgassing requirements
  • Castable in thicknesses exceeding 2-3 inches
  • High strength properties
  • Withstands 1,000 hours 85°C/85% RH

Product Description

Master Bond EP42HT-2LO is a room temperature curable two component epoxy, adhesive, sealant, coating and casting material featuring high temperature resistance along with outstanding chemical resistance. It cures readily at ambient temperatures or more quickly at elevated temperatures. EP42HT-2LO is a superior epoxy adhesive system and is castable to thicknesses exceeding 2-3 inches. EP42HT-2LO has excellent physical strength properties and dimensional stability.

It has an easy to use 100:40 mix ratio by weight or 100:50 by volume. The cured epoxy compound is resistant to various types of fuels, oils, acids, bases, hydrocarbons and many solvents. EP42HT-2LO is an excellent electrical insulator. Especially noteworthy is its serviceability from -60°F up to +450°F. To optimize physical properties including heat resistance and low outgassing, especially if room temperature cured, a post cure at 200°F for 2-3 hours is recommended. EP42HT-2LO can be used in aerospace, optical, electronic, electro-optic and specialty OEM type applications. Since EP42HT-2LO passes NASA low outgassing specifications, it can be used in special situations, such as vacuum environments where that property is obligatory. The color of Part A is clear and Part B is amber clear.

Product Citation

EP42HT-2LO was cited in a paper titled "Design and Implementation of Coating Hardware for the Hobby-Eberly Telescope Wide-Field Corrector" by John Good, Hanshin Lee, Gary J.Hill, Brian Vattiat, David Perry, Herman Kriel, and Richard Savage from the McDonald Observatory, University of Texas at Austin. For more information click here.

Industrial Certifications

ASTM E595 Compliant

1,000 Hours at 85°C/85% RH

Meets EU Directive 2015/863




Gun Applicator


Premixed & Frozen Syringe

EP42HT-2LO is available is various sizes and units to accommodate customer's needs.

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