Hi-Rel Plastics & Molding, Inc.

Hi-Rel Plastics & Molding, Inc. Custom Plastic Injection & Blow Molded Products Manufacturer.

Thermoforming, Vaccumforming, Rotational molding, LSR injection molding, Cleanroom capabilities, Design & Engineering, mold/tool making, 3D printing, prototyping, product assembly services.

Getting an accurate quote starts with a complete RFQ.To help our team respond quickly and precisely, include details lik...
08/27/2026

Getting an accurate quote starts with a complete RFQ.

To help our team respond quickly and precisely, include details like
3D file in STEP format, Annual order quantity, Initial order quantity, Resin specification (type of plastic grade and color), Individual part 2D drawing with critical dimensions and tolerances if available and any secondary or finishing services needed.

The more information you share, the faster we can help bring your project to life.

Send us your files for review.
🌐 https://www.hirelplastics.com/

Not all tooling serves the same purpose.Prototype tooling is built for speed and flexibility, ideal for testing designs ...
08/25/2026

Not all tooling serves the same purpose.

Prototype tooling is built for speed and flexibility, ideal for testing designs and small runs, while production tooling is engineered for durability, efficiency, and high-volume output. Hi-Rel Plastics helps customers choose the right approach at every stage of development, supporting everything from early prototypes to full-scale production across the medical, aerospace, automotive, and industrial markets.

Let's discuss your next project.

🌐 https://www.hirelplastics.com/

Ever notice a thin layer of excess plastic along the edge of a molded part?That's called flash. It forms when a small am...
08/20/2026

Ever notice a thin layer of excess plastic along the edge of a molded part?

That's called flash. It forms when a small amount of material extends beyond the mold parting line during the molding process. In many processes, such as blow molding, flash is a normal byproduct and is trimmed away during finishing. In injection molding, however, excessive flash may indicate that process adjustments are needed. At Hi-Rel Plastics, precise process control and quality tooling help produce clean, consistent parts for demanding medical, aerospace, and industrial applications.

Send us your files for review.

🌐 https://www.hirelplastics.com/

Before a mold is ever cut, simulation can save time and money.Mold flow analysis allows engineers to predict how molten ...
08/18/2026

Before a mold is ever cut, simulation can save time and money.

Mold flow analysis allows engineers to predict how molten plastic will fill a mold cavity, identifying potential issues such as air traps, uneven filling, and warpage before production begins. Hi-Rel Plastics uses these insights to optimize part and tool design for medical, aerospace, and industrial applications, helping ensure quality from the very first shot.

Let's discuss your next project.

🌐 https://www.hirelplastics.com/

08/15/2026

Here’s a different blow molded part we’ve done. If you have a project in mind, we’ll make it happen! Check out the link in our bio and tell us more about your project.

Did you know that a well-built injection mold can produce over a million parts during its lifetime?With proper maintenan...
08/13/2026

Did you know that a well-built injection mold can produce over a million parts during its lifetime?

With proper maintenance and tooling care, a single mold can run reliably for years, delivering consistent, repeatable quality for industries like medical, automotive, and consumer products. It's one reason injection molding remains one of the most cost-effective methods for high-volume manufacturing.
Visit our website to learn more.

🌐 https://www.hirelplastics.com/

From housings and connectors to sealed keypads, electronics products require manufacturing processes tailored to each ap...
08/11/2026

From housings and connectors to sealed keypads, electronics products require manufacturing processes tailored to each application's performance, durability, and design requirements.

Hi-Rel Plastics supports electronics manufacturers with custom plastic molding solutions. We provide injection molding for precision enclosures, connectors, and structural components, blow molding for lightweight housings, LSR molding for seals, gaskets, and keypad components, and thermoforming and vacuum forming for larger housings, covers, and protective panels. Every solution is engineered for precision, reliability, and consistent performance.

Request a quote today.
🌐 https://www.hirelplastics.com/

When mechanical fasteners aren't the right fit, adhesive bonding offers a clean, reliable way to join components.As part...
08/06/2026

When mechanical fasteners aren't the right fit, adhesive bonding offers a clean, reliable way to join components.

As part of our value-added secondary services, Hi-Rel Plastics provides adhesive bonding that creates strong, precise, and durable bonds for assemblies across the medical, automotive, electronics, and industrial markets.
Contact our team to learn more.

🌐 https://www.hirelplastics.com/

Great products start with getting the design right.Hi-Rel Plastics' 3D printing and rapid prototyping services help cust...
08/04/2026

Great products start with getting the design right.

Hi-Rel Plastics' 3D printing and rapid prototyping services help customers validate form, fit, and function before investing in production tooling, reducing risk and shortening time to market. From medical devices to aerospace, automotive, and consumer products, rapid prototyping helps teams move from concept to confident production faster.

Let's discuss your next project.

🌐 https://www.hirelplastics.com/

Precision matters when it comes to complex components.Hi-Rel's plastic and metal CNC machining capabilities deliver tigh...
07/30/2026

Precision matters when it comes to complex components.

Hi-Rel's plastic and metal CNC machining capabilities deliver tight tolerances, consistent quality, and reliable performance for applications across medical, aerospace, automotive, industrial, and consumer markets.
Learn more about our manufacturing capabilities.

🌐 https://www.hirelplastics.com/

Address

7575 Jurupa Avenue
Riverside, CA
92503

Opening Hours

Monday 8am - 4:30pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

(951) 354-0258

Website

,

Alerts

Be the first to know and let us send you an email when Hi-Rel Plastics & Molding, Inc. posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Hi-Rel Plastics & Molding, Inc.:

Shortcuts

Share

Category