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Materials & Chemicals

HEI-CAST: Two-Component Thermosetting Urethane Resin For Custom Polyurethane Processing

Heisen Yoko Co., Ltd.
One of Japan’s best urethane resins for prototype casting

One of Japan’s best urethane resins for prototype casting

Low viscosity and fast curing—ideal for high-precision replication. It enables short turnaround for production and prototyping for automotive, industrial product, and hobby applications.

HEI-CAST is a leading thermosetting urethane resin in Japan with a long-standing market presence. It meets the exacting standards of the automotive industry while also serving creative fields like hobbies and prototyping. Its low viscosity ensures excellent mold flow and bubble-free precision casting, dramatically enhancing productivity. From garage kits to industrial parts and artistic models, it delivers both quality and speed.

More than 50 years of consistent technology and experience

More than 50 years of consistent technology and experience

Solving Critical Challenges on the Manufacturing Floor and Maximizing Efficiency

Facing challenges in development or production—like reproducing complex shapes, reducing bubbles, or speeding up prototyping? HEI-CAST offers proven formulations backed by years of expertise and technical innovation. Its flexible customization options solve these problems at the root, significantly improving your manufacturing efficiency.
Versatile products suitable for all industries

Versatile products suitable for all industries

A Versatile Product Lineup to Meet Diverse Industry Needs

HEI-CAST isn’t just about precision—it’s also about options. Our extensive lineup caters to specific industry needs. For example, the flame-retardant HEI-CAST 8263, certified to UL94 V-0 and 5VA, is ideal for housings in medical and aerospace applications. The heat- and impact-resistant HEI-CAST 8095 excels in prototyping parts used in high-temperature environments. And for applications requiring softness and elasticity, the gel-type HEI-CAST 8421 offers outstanding stretchability. Whatever your vision, we have a material to match.
Serving customers worldwide, especially in Europe and Asia market

Serving customers worldwide, especially in Europe and Asia market

Proven Track Record with Dedicated Technical and Customer Support

Feedback from overseas users
・More demolding cycles (longer mold life).
・Better workability than other brands (shorter cure time).
・Broader development scope thanks to an extensive product lineup.
・Extensive supporting data for product development.
・Exceptional sales and technical follow-up, which they regard as a hallmark of a Japanese company.

Expert support
Engineers with specialized polyurethane expertise provide end-to-end support, from material selection and optimal molding methods to proposals for improving your manufacturing process.

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