General Plastics — Rigid & Flexible Polyurethane Foam Manufacturer
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Local: (800) 806.6051
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International: (253) 473.5000
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General Plastics has been meeting the stringent requirements of engineers and design teams in diverse industries for 80 years. Commercial, military and composite manufacturing companies use LAST-A-FOAM® rigid and flexible polyurethane foam sheet stock for its proven mechanical properties and extraordinary versatility. They also depend on us to provide high-quality, high-performance composite assemblies and finished custom parts.

We work with our customers through the design process, feasibility, fabrication and delivery of custom parts. Whether you need high-temperature tooling boards, core material or custom fabricated assemblies, expect quality, uniformity and stability of materials with General Plastics.

From the oceans’ depths to deep space, we shape great ideas into reality.


  • ISO 9001:2015/AS9100D
  • NQA-1
  • Mil-I-45208A
  • Boeing Company D6-82473
  • ITAR-Compliant

Our Market Solutions

We provide creative solutions for diverse industries. Our expertise, high-quality foam materials, and cost-effective solutions have enabled us to support engineers and design teams from dynamic industries.


Our Products

LAST-A-FOAM® rigid and flexible polyurethane foam products, renowned for their strength, stability, uniformity and unique physical characteristics, satisfy wide-ranging applications and meet the highest standards.


Our capabilities


Our high-capacity production facility enables us to provide customers with end-to-end solutions including fabrication of sub-assemblies. With our help, customers can reduce manufacturing steps to optimize their supply chain.

Cast / Molded Parts

We produce custom-mold parts using flexible and semi-flexible polyurethane foam materials. Our unique formulations and built-to-print capabilities enable us to provide optimal solutions for density-to-part-weight control, void control, surface quality, and physical properties.


Our production facility includes multiple sizes of CNC machines, including 5-axis machines, to fit your needs and specifications. Our customer service, engineering, and CNC teams will work closely with you from concept to completion.


Our comprehensive services enables us to manage all aspects of your custom program. This includes supporting you with part and tool design and mold tooling manufacture as we produce parts through all phases of completion.

Custom Foam Services

Whether you require a custom formulation, foam material in a specific size or shape, poured-in-place mold services, or products already machined and bonded for your application, we tailor solutions and support your needs.


We offer vacuum forming services for various thermoform materials such as ABS, polycarbonate, acrylic and PVC/ABS mix. Materials are formed to customers' specific size and shape requirements.

Complex Laminates

We provide build-to-print standard and custom complex laminates for myriad parts and assemblies. We have created laminate parts for diverse military, commercial, industrial, aerospace and marine applications.

Testing Services

Our Testing Services Group offers a wide range of tests in our on-site testing laboratories, which include an FAA-certified burnt test facility. All tests are conducted using calibrated equipment that is traceable to NIST.

Quality Assurance

We are relentless about making sure that what we produce adheres to our customers' exact requirements and specifications for their application. That's why we consistently follow well-defined procedures that reflect industry best practices and proprietary procedures.

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New Resources

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Polyurethane foam core provides a cost-effective option for ACP Composites’ specialized medical positioning table

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Case Applications

Filling the Need for Consistent, Reliable and Cost-Effective Composite Core Material in Sandwich Panels

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Technical Papers

Composite Core: Factors to Consider When Choosing Core Material for Your Application

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Case Applications

Next Generation Underwater Systems Provides Advancement in Design, Functionality, and Capability with Subsea Buoyancy Foam

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