Master Bond Released High-Heat Resistant Epoxy System
The new two-component EP62-1HTND system expands options for seals requiring extreme thermal and chemical stability.
Updated on Oct. 5, 2026 in Materials Science
Master Bond has released the EP62-1HTND, a two-component epoxy system engineered to maintain structural integrity in chemically aggressive and high-temperature environments. This material is now commercially available for industrial sealing and bonding applications.
Why it matters
The system offers an expanded service range for components exposed to volatile solvents and temperature extremes, directly addressing the need for durable sealants in specialized manufacturing workflows. It provides a technical solution for assemblies where standard epoxies would degrade due to chemical exposure or thermal stress.
The EP62-1HTND material features a service temperature range of -60 °F to +450 °F and a volume resistivity exceeding 10^14 ohm-cm at 75 °F. It demonstrates a Shore D hardness rating of 80-90.
The players
Master Bond
A specialty chemical manufacturer focused on high-performance adhesives, sealants, and coatings for the aerospace, medical, and electronics industries.
The details
The EP62-1HTND is a two-part system requiring a precise 100:5 mix ratio by weight. It achieves its peak chemical resistance to acids, bases, and solvents only after undergoing an elevated temperature cure schedule, a process where controlled heat is applied to trigger the polymerization of the resin and hardener. This curing process creates a cross-linked polymer network, which provides the necessary thermal stability to reach a glass transition temperature—the point at which a material shifts from a rigid, glassy state to a softer, rubbery state—of 145-155 °C.
Timeline
October 5, 2026: Master Bond released the EP62-1HTND epoxy system.
The Tech Race
This release follows the industry trend toward developing specialized resins that maintain structural properties under stringent ASTM D2240 hardness testing parameters. It competes in the niche market for high-temperature chemical-resistant sealants by balancing thermal tolerance with high tensile strength.
This material is intended for engineers and industrial designers requiring a robust sealant for components operating in harsh thermal and chemical conditions. Users must ensure their facility has the necessary equipment for an elevated temperature cure to successfully integrate this epoxy into their assembly workflow.
The takeaway
The EP62-1HTND provides a high-performance option for extreme environment bonding, characterized by its substantial operating temperature ceiling of 450 °F. Engineers should monitor technical documentation from Master Bond for specific cure-time requirements that match their production cycles.
Further reading
Read more about high-performance polymer developments in Materials Science.
Source note: This article includes information reported by AZoM.
