Hi-Rel Plastics & Molding Corp. provides precision plastic injection molding, custom electronic enclosure manufacturing, mold and tooling manufacturing, engineering, prototyping, plastic and metal component manufacturing, assembly, and secondary
services for electronics manufacturers and OEMs throughout California and across the United States.
From PCB housings and electrical connector components to sensor enclosures, control-system housings, insulating components and complex electromechanical assemblies, Hi-Rel Plastics & Molding supports electronics programs from initial product development through production and final assembly.
Our comprehensive plastic injection molding services support precision electronic components requiring dimensional stability, electrical insulation, heat resistance, impact strength, repeatability and tight-tolerance manufacturing.
Hi-Rel Plastics & Molding Corp. operates under ISO 9001:2015, AS9100 Rev D and ISO 13485:2016 certified quality management systems, providing electronics customers with the manufacturing controls required for demanding commercial, industrial, aerospace, medical and high-performance electronic applications.
We serve electronics manufacturers throughout Riverside, Los Angeles, Orange County, San Diego, the Inland Empire, Southern California, Northern California, Silicon Valley and across the USA.
Electronic products frequently require complex molded components with precise dimensions, thin walls, detailed features, insulating properties and reliable interfaces with PCBs, switches, connectors, sensors and other components.
Hi-Rel Plastics & Molding provides custom plastic injection molding for prototype, low-, medium- and high-volume electronics manufacturing programs.
Typical injection molded electronics components can include:
Precision tooling, controlled molding processes and appropriate engineering thermoplastics allow electronic components to maintain critical dimensions and repeatability throughout production.
High-accuracy molding ensures components meet exact specifications for electronic assemblies.
Engineered resins selected for stability, insulation, and reliable performance.
Capability to produce intricate parts with fine details and consistent quality.
Efficient processes designed to support both low- and high-volume electronic manufacturing.
Custom electronic enclosures and plastic housings represent an important opportunity for this page because competing electronics molding companies specifically optimize their content around these applications. Universal Plastic Mold, for example, emphasizes electronic housings, control panels, telecommunications equipment and consumer electronics, while LMC specifically discusses plastic electronic enclosures manufactured from engineering-grade resins.
Hi-Rel Plastics & Molding can manufacture custom components for:
Consumer Electronics
Plastic housings, covers, bezels, internal supports, buttons, structural components and cosmetic components.
Industrial Electronics
Control housings, instrumentation enclosures, sensor housings, equipment covers, mounting components and electrical insulation components.
Telecommunications & Networking
Communication equipment housings, network equipment components, cable-management parts, connector housings and protective enclosures.
IoT & Smart Devices
Sensor enclosures, compact electronics housings, control components and protective device covers.
Test & Measurement Equipment
Instrument housings, control-panel components, protective covers and precision internal components.
Power & Energy Electronics
Power-control housings, insulating barriers, battery-related housings, electrical connector components and protective enclosures.
Material selection is particularly important in electronics because electrical insulation, dimensional stability, temperature resistance, mechanical strength, chemical resistance, flame performance and cosmetic requirements can vary considerably between applications.
Hi-Rel Plastics & Molding processes a broad range of engineering thermoplastics, including:
ABS • Polycarbonate (PC) • PC/ABS • Nylon (PA) • Glass-Filled Nylon • PBT • PPS • LCP • ULTEM®/PEI • PEEK • PVDF • Acetal/POM • Polypropylene (PP) • HDPE • TPE/TPU • Acrylic/PMMA • PVC and other specialty filled and unfilled engineering resins.
ABS, PC, nylon and other engineering materials are commonly discussed by electronics molding manufacturers because their properties can be suited to enclosure and component applications. Ferriot, for example, specifically identifies ABS, PC, TPU, nylon, HDPE and PP among materials used for precision electronic components.
Material selection should ultimately be based on the specific electrical, thermal, mechanical, regulatory and environmental requirements of each application.
Learn more about thermoplastic injection molding material selection.
Electronic components often combine plastic with metal inserts, terminals, contacts or other components.
Hi-Rel Plastics & Molding can support insert molding and overmolding applications designed to consolidate components, simplify assembly and improve finished-product functionality.
Applications may include connector components, terminals, sensor housings, cable components, electrical interfaces, threaded inserts, structural inserts and other plastic-to-metal assemblies.
This capability is worth emphasizing because competing electronics manufacturers specifically promote insert molding as an electronics capability. LMC describes electronics applications involving metal contacts, terminals, connectors and sensor housings molded into plastic, while Plastics Plus Technology highlights insert molding and overmolding for electronic components.
Successful electronics injection molding starts with accurately engineered tooling.
Hi-Rel Plastics & Molding provides mold and tool manufacturing for electronics applications, supporting projects from design evaluation through production tooling.
Tooling capabilities can support:
Prototype molds • production molds • multi-cavity molds • insert molding tooling • overmolding tooling • precision electronic component molds • enclosure molds • connector molds • transferred molds • mold repair and maintenance.
Engineering review and Design for Manufacturability (DFM) can help identify potential issues involving wall thickness, draft, ribs, bosses, snap features, assembly interfaces, material flow and other molding considerations before production tooling is finalized.
Electronics products frequently evolve quickly, making early design validation important before committing to production tooling.
Hi-Rel Plastics & Molding supports product development with engineering assistance, DFM evaluation and 3D printing and rapid prototyping.
Prototype components can help engineers evaluate:
This provides a more complete concept-to-production electronics manufacturing solution.
Some electronic, optical, sensor, medical-electronic and other contamination-sensitive components may benefit from controlled manufacturing or assembly environments.
Hi-Rel Plastics & Molding offers both Class 10,000 / ISO Class 7 cleanroom environments and Class 100,000 / ISO Class 8 cleanroom environments for applications requiring controlled contamination levels.
Our cleanroom and clean room injection molding capabilities can support appropriate high purity and sensitive component applications.
Cleanroom capability is also a competitive SEO topic: Westec specifically markets cleanroom electronics injection molding, while Trademark Plastics promotes ISO Class 8 manufacturing on its electronics page.
Hi-Rel Plastics & Molding provides LSR (Liquid Silicone Rubber) injection molding for flexible electronic components requiring sealing, insulation, environmental protection or vibration control.
Potential electronics applications include:
Explore our Liquid Silicone Rubber molding capabilities.
Hi-Rel Plastics & Molding also offers plastic blow molding services, including extrusion blow molding, injection blow molding and injection stretch blow molding.
Depending upon product requirements, blow molding can be used for lightweight hollow components, protective housings, equipment cases, airflow components, ducts and other specialized electronics-related plastic products.
For larger enclosures, covers, panels and moderate-volume components, thermoforming and vacuum forming may provide an economical alternative to injection molding.
Hi-Rel Plastics & Molding provides thermoforming and vacuum forming services for applications including:
Thermoforming is particularly relevant for large electronics enclosures; Productive Plastics, for example, specifically markets thermoformed electronic and sensor enclosures.
Hi-Rel Plastics & Molding also provides rotational molding services for larger, durable hollow plastic products.
Electronics-related applications may include rugged outdoor enclosures, telecommunications equipment housings, protective field cases, equipment transport containers and utility electronics housings requiring impact resistance and durability.
Offering injection molding, blow molding, thermoforming, vacuum forming and rotational molding gives customers multiple manufacturing-process options depending upon part size, geometry, volume, tooling budget and performance requirements.
Many electronic products require a combination of molded plastic, machined plastic and metal components.
In addition to molding, Hi-Rel Plastics & Molding offers plastic and metal CNC machining and other manufacturing resources to support complete assemblies and specialized components.
This enables OEMs to consolidate more manufacturing requirements with a single supplier instead of coordinating multiple vendors for molded, machined and assembled components.
Manufacturing the molded component is often only one stage of producing a finished electronic product.
Hi-Rel Plastics & Molding provides assembly services and a broad range of secondary manufacturing services to help customers reduce supplier complexity.
Electronics manufacturing support can include:
Mechanical assembly • cable assembly • component installation • subassembly • clean room assembly • ultrasonic welding • heat staking • threaded insert installation • adhesive bonding • pad printing • labeling • surface finishing • CNC machining • inspection • packaging.
For individual operations, customers can also explore:
Ultrasonic Welding & Ultrasonic Insertion for joining plastic housings and assemblies.
Pad Printing for logos, symbols, identification markings and interface graphics.
Heat Insertion & Heat Staking for inserts and component assembly.
Adhesive Bonding for specialized assembly requirements.
Surface Treatment & Enhancements for appearance and functional finishing requirements.
Quality and production consistency are critical when plastic components interface with PCBs, electrical connectors, sensors and precision mechanical assemblies.
Hi-Rel Plastics & Molding Corp. maintains:
ISO 9001:2015
Quality management systems supporting consistent manufacturing and continuous improvement.
AS9100 Rev D
Quality management requirements supporting aerospace and defense manufacturing programs, including electronic and avionics-related component applications where applicable.
ISO 13485:2016
Quality management systems supporting medical devices and medical electronics manufacturing requirements.
Customers can learn more about Hi-Rel Plastics & Molding’s quality systems and certifications.
Hi-Rel Plastics & Molding provides a broad combination of manufacturing processes and value added services for electronics OEMs seeking to consolidate their supply chain.
Customers can access engineering, prototyping, mold and tooling manufacturing, injection molding, cleanroom molding, LSR molding, blow molding, thermoforming, vacuum forming, rotational molding, custom plastic and metal component manufacturing, assembly and secondary operations through a single manufacturing partner.
Key advantages include:
ISO-Certified Quality — ISO 9001:2015, AS9100 Rev D and ISO 13485:2016 certified quality systems.
40+ Years of Manufacturing Experience — Extensive experience supporting demanding molded plastic applications.
Prototype Through Production — Support for product development, tooling, low-volume manufacturing and high-volume production.
Multiple Plastic Manufacturing Processes — Select the manufacturing process best suited to component geometry, size, volume and performance requirements.
Engineering Material Experience — Manufacturing with commodity and high-performance engineering thermoplastics.
Cleanroom Capabilities — Class 10,000 / ISO Class 7 and Class 100,000 / ISO Class 8 environments.
Turnkey Manufacturing — Molding, machining, assembly, decorating, welding and other secondary services.
California & Nationwide Support — Manufacturing support for OEMs throughout Southern California, Northern California and across the United States.
Hi-Rel Plastics & Molding can support plastic and metal component manufacturing for a broad range of electronics markets, including consumer electronics, industrial electronics, telecommunications, IoT devices, sensors, test and measurement equipment, automation systems, power electronics, networking equipment, aerospace electronics, automotive electronics, medical electronics, laboratory electronics, renewable-energy electronics and other electrical equipment.
Our electronics capabilities also complement our work within the Aerospace & Defense industry, Automotive & Electric Vehicle industry, Medical industry, Industrial Equipment industry and Research & Laboratory industry.
Located in Riverside, California, Hi-Rel Plastics & Molding supports electronics manufacturers throughout Los Angeles, Orange County, Riverside, San Bernardino, San Diego, Ventura, the Inland Empire, Southern California, Sacramento, San Jose, Silicon Valley, Oakland, San Francisco, Northern California and throughout the United States.
Whether your program requires a prototype electronic enclosure, precision injection molded connector housing, engineered plastic component, custom tooling, cleanroom molding or a complete assembled product, Hi-Rel Plastics & Molding can support your project from development through production.
Looking for an electronics injection molding company, electronic enclosure manufacturer, custom plastic components manufacturer or electronics contract manufacturing partner in California or the USA?
Contact Hi-Rel Plastics & Molding Corp. to discuss your drawings, 3D CAD files, tooling, material, production volume, assembly or secondary-service requirements.
Electronic components require exceptional precision, consistency, and reliability to support modern devices and connected technologies. Hi-Rel Plastics produces tight- tolerance molded parts designed to perform in demanding electronic applications where dimensional stability, electrical insulation, heat resistance, and durability are critical.
With experience in advanced engineering resins and quality-driven manufacturing, we help electronics manufacturers and OEMs produce reliable molded components that meet both functional and high-volume production requirements.
Injection Molding
Blow Molding
Liquid Silicone Rubber (LSR) Molding
Thermoforming / Vacuum Forming
Rotational Molding
High-accuracy molding ensures components meet exact specifications for electronic assemblies.
Engineered resins selected for stability, insulation, and reliable performance.
Capability to produce intricate parts with fine details and consistent quality.
Efficient processes designed to support both low- and high-volume electronic manufacturing.
