Two component high performance epoxy for bonding, sealing, coating and encapsulation

Key Features

  • Superb optical clarity
  • Outstanding toughness
  • Excellent thermal cycling resistance
  • Withstands 1,000 hours 85°C/85% RH

    Product Description

    Master Bond EP38CL is a lower viscosity, optically clear two component epoxy system for high performance bonding, coating, sealing and small encapsulations, featuring splendid toughness and durability. The mix ratio is 100:60 by weight. This system has easy handling with a reasonable working life of 40-50 minutes. Its physical appearance is particularly striking having wonderful optical clarity and gloss. Perhaps its most appealing and unique attribute is its toughness. Even though EP38CL has a relatively higher Shore D hardness its special blend confers upon it a “toughness”. Specifically, it possesses superior impact resistance, thermal cycling capabilities as well as the ability to withstand mechanical shock better than typical epoxies that are higher on the Shore D scale.

    Also, EP38CL bonds well to a wide variety of substrates, such as metals, ceramics, glass, composites, many rubbers and plastics. Its electrical insulation properties are solid. The service temperature range is -100°F to +250°F. EP38CL is used in optical, aerospace, opto-electronic and specialty OEM applications, particularly when a rigid system with superior toughness is desirable.

    Product Advantages

    • Easy to apply by roller or brush. Convenient working life
    • Extraordinary toughness, capable of withstanding aggressive thermal cycling
    • Appealing electrical insulation properties
    • Imposing optical clarity
    • Reliable adhesion to a variety of substrates
    • Commendable physical strength properties as well as low shrinkage upon curing

    Industrial Certifications

    1,000 Hours at 85°C/85% RH




    Premixed & Frozen Syringe

    EP38CL is available is various sizes and units to accommodate customer's needs.

    Visual Media

    Master Bond EP38CL Epoxy Compound

    Shining a light on incredible toughness, Master Bond EP38CL is a two component epoxy that withstands rigorous thermal cycling and mechanical shock.
    This durable system also boasts superior optical clarity and a high physical strength profile.

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