Custom Plastic Molding and CNC Machining

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We Specialize in Custom Plastic Molded and CNC Machined Parts

Located in Southern California, Southwest Plastics Company specializes in molding thermoplastic and thermoset plastic components and manufacturing CNC machined parts. Our engineers will help you take your ideas from design to mass production.

Our experience in CNC machining, plastic injection molding, and transfer/compression molding, combined with our in-depth knowledge of materials, allows us to deliver quality parts at economical prices.  We are proud to say QUALITY PARTS - MADE IN AMERICA


Enjoy faster
turnaround times

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The right material for the right project

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Combine metal with plastic parts

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Your intellectual property is safe

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Our Capabilities

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Plastic Injection Molding

Leaders in manufacturing critical plastic parts that require engineered materials & precise manufacturing controls.

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Compression / Thermoset Molding

Ideal for parts that operate in a high heat environment
that won't soften or melt

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CNC Machined Parts

Offering a variety of to CNC options, we manufacture parts in an assortment of sizes, shapes & materials to very tight tolerances.

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Design and Material Support

From concept to production the we will help design, select the right material or manufacturing process, for the best outcome.

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Companies We’ve Worked With

Typical Industries
We Serve

We provide custom plastic parts for communication, medical devices, aerospace, electronic connection components, military equipment, bushings and bearings, valves and pumps.

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Three generations of excellence

Since 1974 we have been providing outstanding quality, value, and service. 

ISO 9001-qualified
Plastic injection molding | Plastic injection compression molding | Plastic transfer molding

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