Wm. F. McGraw & Co. provides engineered material solutions to drive the future of electric mobility. Our precision-fabricated components provide the backbone for many next-generation EV systems, including battery protection and charging efficiency. Our products are designed not only to meet, but exceed the electrical, thermal, and mechanical challenges of electric vehicles, keeping systems cooler, safer, and with longer life. Wm. F. McGraw & Co. collaborates with OEMs, suppliers, and innovators to accelerate EV performance, safety, and sustainability in every segment of the EV landscape.
We offer coverage across a full spectrum of electric vehicle insulation and supporting systems made for critical EV subsystems. From battery pack insulation and high-voltage EV materials in charging stations and inverters, our engineered components are created to meet changing industry standards. Each material is chosen and made for its purpose – high dielectric strength, flame retardant, or thermal durability. Whether developing advanced drive trains or resilient EV infrastructure, our solutions deliver performance with reliability at every level.
We offer coverage across a full spectrum of electric vehicle insulation and supporting systems made for critical EV subsystems. From battery pack insulation and high-voltage EV materials in charging stations and inverters, our engineered components are created to meet changing industry standards. Each material is chosen and made for its purpose – high dielectric strength, flame retardant, or thermal durability. Whether developing advanced drive trains or resilient EV infrastructure, our solutions deliver performance with reliability at every level.
Wm. F. McGraw & Co. has specialized insulation and support materials designed for EV battery packs that provide safety, efficiency, and system integrity. Our flame-retardant EV materials decrease the potential for thermal propagation, while the die-cut liners provide a clean, repeatable fit for high-volume cell assemblies. Our compression pads improve structural integrity through consistent pressure on the cells, ultimately improving thermal contact and lowering vibration. We also manufacture thermal barriers and shielding to contain or slow thermal runaway events. In any high-energy system, thermal runaway represents a critical safety event. Every Wm. F. McGraw & Co. product is designed around your battery design; pouch, prismatic, or cylindrical, providing and ensuring form, fit, and function in demanding applications.
Our engineered insulation for electric drive motors combines durability, heat resistance, and precise geometry. We supply slot liners, phase barriers, and wedges that protect windings and promote efficient heat dissipation. Rotor and stator components are machined from high-performance rods and tubes, ensuring a stable fit and maintaining magnetic alignment even under prolonged stress. Thermoformed structural covers provide both electrical shielding and structural reinforcement, contributing to long-term durability. These materials reduce dielectric breakdown and minimize electromagnetic interference, optimizing drive motor efficiency across hybrid and fully electric platforms.
Inverters are the heart of EV power systems, and our insulation solutions support their safe, uninterrupted function. We provide dielectric shields, arc barriers, and precision-fit busbar insulation for high-frequency switching environments. Our materials are engineered to handle elevated temperatures and resist tracking, even in compact assemblies. Custom-formed housings from high-temperature thermoplastics protect sensitive circuitry while maintaining dimensional accuracy under load. These advanced solutions contribute to energy efficiency, reliability, and safety, supporting the evolution of more compact and powerful inverters for all types of electric vehicles.
Charging systems face the dual challenge of electrical performance and mechanical durability. Our insulation materials ensure secure and stable power transfer in every charge cycle. We supply gaskets, spacers, and housing components made from electric vehicle insulation materials engineered to resist high voltages and prevent arc faults. Vibration-damping elastomers stabilize connections and reduce mechanical wear, extending the life of plugs, housings, and embedded electronics. Our solutions help enhance charging speed, safety, and uptime in home, commercial, and rapid-charging applications.
At Wm. F. McGraw & Co. in Riverview, MI, we offer a curated range of engineered materials formulated for EV environments. These include high-voltage EV materials, heat-resistant thermoplastics, impact-absorbing elastomers, and EV composite materials tailored to diverse automotive needs. Whether your goal is weight reduction, thermal management, or system safety, we offer materials that perform under pressure.
Our EV composite materials are selected for their strength, low weight, and high dielectric performance. These rigid laminates are used in busbars, rotor and stator insulation, and internal battery barriers. Composites resist both mechanical and thermal fatigue, making them a smart choice for components exposed to cyclical loads and heat. These materials also reduce electromagnetic interference and support the miniaturization of components. Whether you use flame-retardant insulation for battery enclosures or structural laminates for e-motors, our composites deliver consistent results over time.
Thermoplastics are a mainstay in electric vehicle insulation, offering a balance of toughness and versatility. Our engineered thermoplastics are heat-resistant, chemically stable, and easy to form into precise shapes for complex assemblies. Common uses include insulating shields, electronic housings, and high-voltage enclosures. Many of our thermoplastics are UL-listed and meet stringent flammability ratings. Their low moisture absorption and strong dielectric strength make them ideal for protecting sensitive components in humid or variable environments. As a result, they are heavily relied upon in battery modules, inverters, and onboard chargers.
Elastomeric materials provide flexibility, sealing, and shock absorption for a range of EV applications. Our impact-resistant elastomers are engineered for high-performance gasketing, vibration isolation, and electrical protection. These materials conform to tight tolerances and resist tearing, abrasion, and thermal cycling. Elastomers are widely used in mounting pads, seals, and protective enclosures, wherever mechanical stress and environmental exposure threaten component integrity. They also help reduce transmitted vibration in EV drive units and power distribution boxes, increasing longevity and reducing noise.
With decades of experience and a deep understanding of advanced materials, Wm. F. McGraw & Co. is your partner in EV innovation. From prototyping to full-scale production, we provide materials and components that enhance system performance, ensure safety, and simplify assembly. Our team in Riverview, MI, works closely with customers to meet evolving industry standards in battery pack insulation, EV thermal management, and high-voltage EV materials. Whether you’re electrifying passenger vehicles, heavy-duty trucks, or infrastructure, we offer the precision and support that innovation demands.
Looking for tailored electric vehicle insulation solutions that support your design and performance goals? Wm. F. McGraw & Co. delivers engineered materials and components for every EV subsystem, from battery to charge port. Located in Riverview, MI, we’re here to help you electrify with confidence. Reach out today to discuss your project or request a quote. Let’s build the future of mobility, together.
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