Various sizes and colors of water tanks and water storage containers produced by rotational molding, including black, white, green, blue, yellow, and gray models displayed on a white background.

Rotational Molding: Durable, Seamless, and Cost-Effective Solutions

Rotational molding (roto-molding) is a highly versatile plastic manufacturing process that creates seamless, durable, and hollow components with uniform wall thickness. Known for its ability to produce large, complex parts with minimal material waste, roto-molding is an excellent choice for industries requiring weather-resistant, high-strength plastic solutions.

A collection of various black and white plastic parts and accessories, produced by rotational molding.

Why Choose Rotational Molding?

Unlike injection or blow molding, rotational molding allows for cost-effective tooling, making it an ideal solution for low- to medium-volume production (typically fewer than 500 parts annually). The simplicity of the molds reduces initial investment costs, and the process can accommodate large-scale designs that other plastic manufacturing methods cannot.

A man in a red shirt and black cap working on rotational mold industrial machinery in a manufacturing factory. 
By Rishisaranroto - Own work, CC BY 4.0

Key advantages of rotational molding:

Lower mold costs compared to injection molding

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Ideal for large, single-piece plastic components

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Cost-effective for smaller production runs

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Seamless, high-strength construction with uniform wall thickness

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Our Rotational Molding Capabilities

At Concept Sales Inc., we partner with top manufacturers to provide high-quality, precision-engineered roto-molded solutions for various industries. Our partners offer:

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22 rotational molding machines (Ferry 190 - 650) ensure flexible production for projects of all sizes.

State-of-the-Art Machinery

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Full-time engineers with 2D, 3D, and solid modeling capabilities to refine your product design.

Expert Engineering Team

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Advanced inspection tools: ultrasonic thickness measurement, CNC measurement, leak detection, and first article reporting.

Precision Quality Control

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In-house mold maintenance facility ensures efficiency and longevity of tooling.

Comprehensive Mold Maintenance

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425,000 square foot facility with a dedicated delivery fleet serving the continental U.S.

Manufacturing Facility

Ready to explore how rotational molding can work for your project?

Get in touch today to discuss your requirements and find the right solution for your needs.

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Best Use Cases for Rotational Molding

  • Large, single-piece plastic products

  • Outdoor and agricultural applications that require weather resistance

  • Chemical and liquid storage solutions

Common Applications

Agricultural tanks

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Bulk storage containers

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Safety barricades & traffic barriers

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Recreational & industrial equipment