Custom Plastic Component Parts Manufacturing

Southwest Plastics Company is a high-precision plastic parts manufacturer. Located in Southern California, we have used our custom plastic components manufacturing capabilities to provide customers of all industries with high-quality plastic components for over 45 years. Our experience in thermoplastic injection molding, transfer, and compression molding, combined with our in-depth knowledge of materials, allows us to deliver quality parts at economical prices. Whatever your plastic injection molding requirements entail, our engineers will help you take your ideas from concept to mass production.

Our Capabilities

Plastic Injection Molding

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

Molding Services

Compression / Thermoset Molding

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

Compression Molding

CNC Machined Parts

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

Machining

Design and Material Support

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

Support

Companies We've Worked With

Plastic Injection Molding Services for All Industries

We manufacture components used in many of the world's most demanding industries. Our plastic manufacturing capabilities can handle everything from standard components like bushings, bearings, valves, and pumps to complex custom parts with unique dimensions.

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Serving Our Customers Since 1974

Since 1974, Southwest Plastics has provided outstanding quality, value, and service for customers nationwide. We’re committed to producing our plastic components onshore to ensure you get the best quality plastic components for your application. Whether you're a large corporation looking for high-volume plastic part production or a small private business looking to develop a custom component part, Southwest Plastics can make your vision a reality.