Materials & Formulations

Tailoring Systems to Meet Specific Applications

Material selection, formulation, reinforcement architecture, and component design all influence electrical, mechanical, thermal, and environmental performance. CK Composites works with OEMs to tailor material systems around the specific demands of each application.

Considerations Include:

Electrical Performance

Dielectric strength, partial discharge resistance, insulation life, and electrical reliability.

Mechanical Performance

Strength, stiffness, impact resistance, creep resistance, and dimensional stability.

Environmental Resistance

Temperature, moisture, chemicals, UV exposure, and long-term aging.

Manufacturability & Lifecycle

Repeatability, production scalability, service life, and total lifecycle performance.

Our Material Systems

CK Composites manufactures across four composite material platforms, each selected and configured to match the electrical, mechanical, and environmental demands of the application.

A gray industrial electrical bushing with a ribbed insulator and mounting plate, set against a blue gradient background.

Cast Epoxy Resin Systems

Supports a range of cast epoxy formulations, including cycloaliphatic and Bis-A systems, selected to meet application-specific requirements.

Explore InsulVolt®
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Fiberglass‑Reinforced
 Composites

Filament-wound composites can be tailored through fiber orientation, reinforcement architecture, and resin selection.

Explore InsulWynd®
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Densified 
Wood Laminates

Several grades of materials are available, with performance influenced by laminate construction, resin impregnation, and veneer orientation.

Explore InsuLam®
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Liquid Silicone Rubber (LSR) Overmolding

Material properties can be precisely tailored to support dielectric insulation, environmental sealing, and mechanical properties

LSR Overmolding

InsulVolt® Cast Epoxy Resin Systems

Engineered cast epoxy insulation systems designed for applications requiring dielectric performance, mechanical integrity, and long-term reliability.

Cycloaliphatic and Bis-A resin systems

High dielectric strength and insulation performance

Mechanical support and embedded conductor integration

Outdoor durability and environmental resistance

Common Applications

Switchgear, circuit breakers, transformers, instrument transformers, and power distribution equipment.

Explore Cast Epoxy Resin

InsulWynd® Fiberglass Filament-Wound Tubes and Composites

Filament-wound composite structures optimized through fiber architecture, resin selection, and winding patterns to achieve application-specific performance.

Tailored hoop and axial strength

Lightweight structural performance

Corrosion resistance

MRI-compatible and cryogenic-capable systems

Common Applications

Radomes, medical imaging systems, pressure vessels, insulated couplings, and structural composite assemblies.
Explore Fiberglass

InsuLam® Densified Wood Laminate Systems

Densified laminate materials engineered through veneer selection, resin impregnation, laminate construction, and machining to achieve demanding structural and electrical properties.

Grade-specific mechanical properties

Optimized veneer orientation

High compressive strength

Excellent strength-to-weight ratio

Common Applications

Transformer pressure rings, coil supports, railcar shoe beams, and structural insulation assemblies
Explore Laminated Densified Wood

Liquid Silicone Rubber (LSR) Overmolding Systems

Liquid Silicone Rubber (LSR) insulation systems providing dielectric protection, environmental sealing, and mechanical compliance for demanding electrical applications.

Dielectric insulation and field control

Environmental sealing

Mechanical buffering and stress relief

Integrated epoxy and silicone assemblies

Common Applications

Vacuum interrupter assemblies, conductor interfaces, environmental sealing systems, and integrated insulation components.
Explore Silicone Overmolding

Materials matched to your demands

How We Select & Tailor Materials

Every application places different demands on the material system. CK Composites works with customers to evaluate electrical, mechanical, environmental, and manufacturing requirements to select and optimize materials for long-term performance and reliability.

Looking for a disciplined U.S. manufacturing partner?

Let’s match CK Composites’ epoxy, fiberglass, wood, and silicone formulations to your next high‑voltage system.

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