Hi-Rel Plastics & Molding Corp. delivers precision injection molding, blow molding, and cleanroom manufacturing for industries where quality, consistency, and compliance are non-negotiable. From concept to production, we ensure every part meets the highest standards.
MAJOR INDUSTRIES
Hi-Rel Plastics & Molding Corp. is a full-service manufacturer specializing in custom injection molding, blow molding, and precision plastic components for demanding industries. From part evaluation and prototyping to tool design, mold building, and production, we support every stage of the process with quality, consistency, and on-time delivery.
With more than 40 years of experience, we help customers in medical, aerospace, military, and industrial markets bring complex parts to life with strict tolerances and dependable performance.
From concept to production, Hi-Rel Plastics & Molding Corp. delivers precision manufacturing solutions tailored to demanding industries, ensuring quality, consistency, and performance at every stage. View our services below.
Accelerate development with rapid prototyping and 3D printing for faster design validation and reduced time to production.
Custom blow molding solutions for durable hollow parts across a wide range of industrial applications.
In-house mold design and tool building ensures precision, efficiency, and long-term production reliability.
Controlled cleanroom manufacturing for medical and high-purity applications requiring strict contamination control.
High-precision injection molding for complex components with tight tolerances and consistent, repeatable quality.
Specialized LSR molding for flexible, durable components used in demanding and high-performance environments.
High-performance plastic parts built to withstand demanding environments, ensuring durability, consistency, and long-term reliability.
Tight-tolerance components designed to meet strict aerospace standards for performance, safety, and reliability.
Custom-molded components engineered for strength, precision, and high-volume production environments.
Hi-Rel Plastics & Molding Corp. partners with leading companies across multiple industries to deliver high-quality, precision-engineered plastic components. Our expertise, advanced capabilities, and strict quality standards ensure every project meets the performance demands of its application.
We work with engineers, procurement teams, and product designers across a wide range of industries. Here are some of the most common questions we get about our plastic injection molding and manufacturing capabilities.
We specialize in custom plastic injection molding and blow molding, supporting projects from initial concept through full-scale production. Our capabilities include prototyping, tool design, tool building, sampling, and high-volume manufacturing.
We serve a wide range of industries including medical, aerospace, military, industrial, automotive, and scientific applications. Our team is experienced in producing both highly technical components and precision consumer-facing products.
It depends on the product application, performance requirements, and manufacturing process. For injection molding, we work with a wide variety of materials including ABS, Polycarbonate (PC), Nylon, Acetal, Acrylic, TPU, Polypropylene (PP), and Polyethylene (PE). For blow molding, commonly used materials include HDPE, LDPE, Polypropylene (PP), and PET depending on the design and end-use requirements. We also work with many additional custom and specialty materials based on specific project needs.
Yes. We regularly manufacture components with tolerances as tight as ±0.001 inch, ensuring consistency, performance, and minimal rejection rates for critical applications.
Yes. Our team can assist with product design and development, including creating 3D CAD models based on sketches, drawings, prototypes to ensure optimal design, manufacturability, and cost efficiency before production begins.
Timelines vary based on project complexity, tooling requirements, and volume. However, our streamlined process and experienced team ensure efficient turnaround and reliable, on-time delivery.
To start the quoting process, simply contact us through our website contact page. Our team will follow up to request additional information such as a 3D CAD model, drawing, material, quantities, and project details needed to prepare an accurate quote.
Minimum order quantities vary depending on the manufacturing process, material, part size, and project requirements. Our team will review your project details and recommend the most cost-effective production quantity for your application.
We can manufacture a wide range of part sizes depending on the molding process and material requirements. Our injection molding capabilities range up to 900-ton press capacity, allowing us to produce everything from small precision components to large parts approximately the size of a plastic chair.
Yes. We offer tooling storage and ongoing preventive maintenance for molds manufactured by us. Tools are securely stored and insured against risks such as fire, explosion, and earthquake at no additional cost.
Yes. Based on your product application, industry requirements, durability needs, indoor or outdoor use, and cost considerations, our experienced team can help recommend the most suitable material for your project.
Yes. We offer a variety of secondary and custom value-added services including assembly, custom packaging, labeling, pad printing, ultrasonic welding, and other finishing operations to help streamline your production process.
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Whether you need a quote, have a tooling question, or want to discuss a custom plastic manufacturing project, our team is here to help. We work with customers across a wide range of industries and are ready to support your project from concept through production.
7575 Jurupa Ave Riverside, CA 92504
