What are the opening hours?

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

Hi-Rel Plastics & Molding, Inc.

Name: Hi-Rel Plastics & Molding, Inc.
Address: 7575 Jurupa Avenue, Riverside, CA, 92503, US
Telephone: (951) 354-0258

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Riverside, CA
Hi-Rel Plastics & Molding, Inc.

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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.

10/13/2026

Precision isn't an accident. It's a process.

Every tight tolerance we hold is backed by 40+ years of proven tooling and quality checks at every stage — because "close enough" has never been good enough for the parts we build.

Let's build something precise together. 🌐 https://www.hirelplastics.com/

10/08/2026

The same hands-on quality checks behind every container we mold are what we'll be talking about in Chicago.

We're exhibiting at PACK EXPO International, October 18–21 at McCormick Place — Booth W-50034.

Come see how we build it right. 🌐 https://www.hirelplastics.com/

10/06/2026

300+ manufacturing categories, one show floor.

We're heading to the Pasadena Convention Center October 14–15, 2026, for the Southern California Design-2-Part Show. Find us at Booth 334 to talk molding and tooling with our team and see sample parts up close.

Free to attend — come see us. 🌐 https://www.hirelplastics.com/

09/29/2026

Why choose a plastic injection molding company in California?

California is home to one of the nation’s most advanced manufacturing ecosystems—supporting industries from medical devices and aerospace & defense to automotive, electronics, industrial equipment, and consumer products.

At Hi-Rel Plastics & Molding Corp., we combine 40+ years of plastics manufacturing experience with:
ISO 9001:2015, ISO 13485:2016 & AS9100 Rev D, Custom Plastic Injection Molding
Engineering, DFM & Mold Flow Analysis, Mold Design & Manufacturing, Cleanroom Manufacturing, LSR, Insert Molding & Overmolding, Secondary Operations & Assembly, and Prototype through Production Manufacturing.

Based in Riverside, California, Hi-Rel supports OEMs throughout California and across the USA with reliable, precision-focused plastics manufacturing solutions.
Looking for a California injection molding partner for an upcoming project?

https://www.hirelplastics.com

09/24/2026

Not all manufacturing partners are built the same.

From in-house mold design and tool building to ±0.001" tolerances, 40+ years of experience, and turnkey support from prototyping through production and assembly — here's what OEMs across medical, aerospace, automotive, and industrial markets count on us for.

Let's discuss your next project. 🌐 https://www.hirelplastics.com/

09/22/2026

Ever wonder how a bottle, tank, or jug gets its hollow shape?

Blow molding forms a molten thermoplastic tube, encloses it within a mold, and inflates it with compressed air to take the shape of the cavity. We support multiple blow molding processes, including Extrusion Blow Molding, Injection Stretch Blow Molding, and Injection Blow Molding, for applications ranging from packaging to medical containers.

Have a hollow part in mind? Let's talk blow molding. 🌐

https://www.hirelplastics.com/

09/17/2026

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/

09/15/2026

Founded in 1984, Hi-Rel Plastics & Molding has spent over 40 years growing into a full-service, turnkey custom manufacturer.

From part evaluation and prototyping through tooling, production, and assembly, we support customers across medical, aerospace, automotive, and industrial markets with precision injection molding, blow molding, tooling, and value-added secondary services — all from our Riverside, CA facility.

Learn more about who we are. 🌐 https://www.hirelplastics.com/

09/10/2026

When contamination isn't an option, controlled manufacturing isn't optional either.

Hi-Rel Plastics provides clean room molding for medical and high-purity applications that demand strict contamination control, engineered to satisfy the regulatory standards your product has to answer to.

Let's talk about your next medical component. 🌐 https://www.hirelplastics.com/

09/08/2026

Quality isn't something we check for at the end of the line — it's built into every part, every run.

From full material traceability to in-process inspection at every stage, our documented and repeatable procedures are backed by an ISO-certified quality system and 40+ years of experience manufacturing for regulated industries, right here in Riverside, CA.

Learn more about our quality standards. 🌐 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

https://www.hirelplastics.com/, https://vimeo.com/1152717655

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