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United Resin’s Epoxy Resin Systems for Battery Potting, Encapsulation, Electric Vehicle (EV), & EV Components

Home > Products > Battery Potting, Encapsulation, Electric Vehicle (EV), & EV Component Resin Systems
United Resin’s Epoxy Resin Systems for Battery Potting, Encapsulation, Electric Vehicle (EV), & EV Components

United Resin has a number of well-established epoxy systems for potting and encapsulating batteries, battery components, and electronic part casting. Epoxy resin will keep your batteries secure from damage caused by shock, moisture, vibration, chemicals, and many other elements. United Resin has the material and expertise when selecting epoxy material for your battery applications. We have materials ready for most applications and can develop custom systems to meet all your requirements. Contact one of our epoxy experts to discuss your requirements. United Resin will work with you to tailor a product to fit your needs. Our goal is to find the right material for your applications.

Our formulated epoxy systems excel in applications where an industrial adhesive or potting, encapsulating, and casting material is required, including for large or small batteries and battery packs. Industries range from lithium battery packs, EV batteries, power tool batteries, garden equipment tool batteries, marine components, military/defense applications, GPS tracking components, process control parts, and more. United Resin has been supplying the automotive industry for over 50 years. We have developed lightweight epoxies for the Electric Vehicle (EV) and Electric Vehicle (EV) battery markets. United Resin has several established systems to meet the needs in EV manufacturing. All our materials are non-hazardous, REACH/RoHS compliant, and contain no solvents.

United Resin has UL Approved (HB and V-O), lightweight, high thermal, thermally conductive, and heat resistant materials with low exotherm properties. Epoxy is resistant to chemicals, acids, fuels, solvents, moisture, and salts, making it an excellent choice for your potting, encapsulation, and EV component needs. This allows designers several choices when selecting an epoxy material from United Resin. We offer a wide range of hardness and viscosities of epoxies to meet your needs.

Battery Potting & Encapsulating Epoxy Resin Systems for EV Batteries & EV Components

EL-CAST with 641 Hardener

El-Cast with 641 Hardener is a medium viscosity potting and encapsulation resin. It has excellent bonding properties to metals, plastics, and ceramics. With good air release, the cured part will have a gloss finish. Maximum use temperature of this system is 250 F.

Key properties

UL 94 Flame ClassHB
Color:Black or White
Shore "D" Hardness ASTM D2240:85
Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D2571.3 x 1015
Dielectric Constant, Test frequency: 1 MHz per ASTM D1504.39
Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149409
Dissipation Factor, Test frequency: 1 MHZ per ASTM D150.0213
Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C1776.50

Other Applications

Batteries for lawn and garden equipment, pulse transformers, magnetic components, noise interference filters, marine sonar devices, and many other potting, casting or encapsulating applications.

 

EL-CAST VFR PLUS with 117 Hardener

El-Cast VFR PLUS with 117 Hardener is a 100% epoxy system. This system is a softer, flexible, epoxy system. This system’s low viscosity and excellent air release allows it to cure to a high gloss finish. This system is UL 94 V-O approved.  This system has 0 second AfterFlame, no flame drip and is easy to mix.

Key properties

UL 94 Flame ClassV-O
ColorBlack
Shore "A" Hardness ASTM D2240:75
ViscosityMixed: 7,000 cps
Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D2572.7 x 1015
Dielectric Constant, Test frequency: 1 MHz per ASTM D1504.22
Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149496
Dissipation Factor, Test frequency: 1 MHZ per ASTM D1500.0187
Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C1776.25

Other Applications

Delay lines, pulse transformers, alarm systems, filters, and magnetic components.

 

EL-CAST VFR PLUS with 118 Hardener

El-Cast VFR PLUS with 118 Hardener is a filled two-component epoxy, that is UL approved for 94 V-O. The VFR system has excellent air release and cures to a high gloss finish. It is heat resistant to 400°F.  This system has excellent fire retardancy, no flame drip and is easy to mix.

Key Properties

UL 94 Flame ClassV-O
ColorBlack
Shore "A" Hardness ASTM D2240:85
Viscosity:Mixed 6000 cps
Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D2574.4 x 1015
Dielectric Constant, Test frequency: 1 MHz per ASTM D1504.28
Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149499
Dissipation Factor, Test frequency: 1 MHZ per ASTM D1500.0181
Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C1776.65

Other Applications: Delay lines, pulse transformers, alarm systems, filters, magnetic components, and all applications where UL testing is required.

 

United Resin Bio SeriesEl-Cast VFR Plus Sustain-X with 117 Hardener

El-Cast VFR Plus Sustain-X with 117 hardener is part of United Resin’s new Bio Series, incorporating bio-renewable material without compromising performance or quality. It is a softer, flexible, high temperature epoxy system. This system’s low viscosity and excellent air release allows it to cure to a high gloss finish. This material has great flame-retardant properties. Available in black. Note: If UL rating is required, see United Resin El-Cast VFR Plus.

Applications: Potting and encapsulation of electronic components, such as delay lines, pulse transformers, alarm systems, filters, and magnetic components. Potting and encapsulation of parts.

 

EL-CAST 760 with 4123

El-Cast 760 with 4123 is a filled two-component epoxy which features safe handling properties and high deflection temperatures with an overnight cure. It has excellent thermal conductivity and good flow qualities, making this product a very versatile system.

Volume Resistivity, Applied voltage: 500 VDC @ 1 min. Ele. per ASTM D2570.8 x 1016
Dielectric Constant, Test frequency: 1 MHz per ASTM D1505.17
Dielectric Strength, Oil rate of rise (short time): 500 V/S per ASTM D149432
Dissipation Factor, Test frequency: 1 MHZ per ASTM D1500.0212
Thermal Conductivity, BTU-in./hr, -ft2-oF per ASTM C17712.25

 

United Resin Bio SeriesE-Cast F-28 Sustain-X with 215 Hardener

E-Cast F-28 Sustain-X with 215 hardener is part of United Resin’s new Bio Series, incorporating bio-renewable material without compromising performance or quality. It is a two-component unfilled epoxy with medium viscosity and good flow qualities. With a rigid room temperature cure, it has excellent adhesion to metals, plastics and ceramics. Available in amber, white, black or custom colors if required.

Applications: Encapsulation of electronic components, potting, and conformal coatings. It also may be used in many adhesive applications.

United Resin Bio SeriesE-Cast F-82 Sustain-X with 110 Hardener

E-Cast F-82 Sustain-X with 110 hardener is part of United Resin’s new Bio Series, incorporating bio-renewable material without compromising performance or quality. It is a low viscosity two-part system that has a rigid cure with excellent adhesion and chemical resistance. It also has excellent thermal shock and good impact resistance. Available in amber, white, or black.

Applications: Dipping or coating of circuit boards, and potting, casting and encapsulating.

United Resin Bio SeriesE-Cast F-82 Sustain-X with 275 Hardener

E-Cast F-82 Sustain-X with 275 hardener is part of United Resin’s new Bio Series, incorporating bio-renewable material without compromising performance or quality. It is a low viscosity unfilled two- component epoxy that features safe handling properties. Its good thermal cycling abilities, longer work time, impact and heat resistance make this product very versatile. Large potting will cure overnight without heat cure. Available in amber, black or white.

Applications: Encapsulation of electronic components, such as Industrial control units, transformers, and all potting applications needing improved thermal shock and thermal conductivity. It also may be used in many adhesive applications.

United Resin Bio SeriesE-Cast F-82 Sustain-X with 302 Hardener

E-Cast F-82 Sustain-X with 302 hardener is part of United Resin’s new Bio Series, incorporating bio-renewable material without compromising performance or quality. It is a low viscosity, resilient casting resin. Due to its low viscosity and long pot life, de-airing is not a problem; however, vacuum de-airing will ensure the best results. Longer cure times or slight heat (not to exceed 150 F) is needed for thin films. Post-curing at higher temperatures will increase all properties. Available in amber, white, black or custom colors if required.

Applications: Encapsulation of electronic components or embedded displays in electronics, including light emitting diodes (LEDs), and virtually any application where internal viewing is necessary.

United Resin Bio SeriesE-Cast F-82 Sustain-X with TP-41F Hardener

E-Cast F-82 Sustain-X is part of United Resin’s new Bio Series, incorporating bio-renewable material without compromising performance or quality. Paired with TP-41F hardener, it offers a rigid cure, excellent adhesion, and strong chemical resistance. Its low viscosity enhances air release and flowability, making it a sustainable yet high-performance solution for industrial applications. Available in amber, white, black or custom colors if required.

Applications: All potting and encapsulation applications, cement wall repair. It also may be used in many adhesive applications.

 

Crystal Clear Resin with 117 Hardener  

This is a two-component unfilled epoxy system with low viscosity and low exotherm, with an overnight cure.  It exhibits good thermal shock, low shrinkage, and chemical resistance.  Applications include LED lighting, power supplies, magnetic components, marine sonar devices, and mass potting and encapsulating applications that require a tough, impact resistant casting. This is a softer system that allows for cut out replacement and re-pour for repairs as needed in an LED system.

SpecificationsHARDENERCOLORHARDNESSMIXING RATIO MAX. USE TEMP.MIXED VISCOSITYDIELECTRIC STRENGTHDIELECTRIC CONSTANTCTETHERMAL CONDUCTIVITY-BTUPOT LIFE MINUTES
SHORE "A"(Parts by Weight) ºFCPS @ 72 ºFas per ASTM D149as per ASTM D150in/in/ºF as per ASTM D696as per ASTM C177(100 gram Mass)
@ 72 ºFRESINHARDENER@ 72 ºF
117Clear60 A100873003,0004605.122.18 x 10-51.7180

 

Crystal Clear Resin with 929 or 939 Hardener

This is a two-component unfilled epoxy system with low viscosity and good flow qualities.  This system has excellent adhesion to ceramics and glass.  Its high purity formulation prevents yellowing upon exposure to light.  The material cures to a toughened state and is not brittle, making it ideal for thin bond lines and permanent LED placement.

SpecificationsHARDENERSCOLORHARDNESSMIXING RATIO MAX. USE TEMP.MIXED VISCOSITYDIELECTRIC STRENGTHDIELECTRIC CONSTANTCTETHERMAL CONDUCTIVITY-BTUPOT LIFE MINUTES
SHORE "D"(Parts by Weight) ºFCPS @ 72 ºFas per ASTM D149as per ASTM D150in/in/ºF as per ASTM D696as per ASTM C177(100 gram Mass)
@ 72 ºFRESINHARDENER@ 72 ºF
929Clear80100222006004505.411.46 x 10-51.77 hours
939Clear80100332002,0004505.411.28 x 10-51.718 hours


Call us to discuss these systems or to discuss a new system to meet your specific requirements.

1.800.521.4757 | info@unitedresin.com

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  • United Resin Bio Series Sustain-XUnited Resin Bio Series Sustain-X
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