Urethane Casting Service

  • Instant quotes & DFM feedback
  • Production grade quality
  • Parts as fast as 10 days

Production Quality at Low Volumes

This process is a quick, cost-effective way to produce 10-200 units with production-level quality. Typically, each silicone mold will produce 20 castings.

Complex Elastomeric Parts

Urethane casting is ideal for prototyping elastomeric parts such as complex gaskets and overmolds on rigid parts.

High Level of Detail

Urethane casting allows for almost limitless complexity, including sharp internal corners unachievable with CNC machining, and designs without draft or uniform wall-thickness that can’t be injection molded.

Your Material Selection Assistant

Which aluminum alloy is ideal for your needs? What 3D printing material has excellent tensile strength? Try Materials.AI and get help navigating the complex landscape of plastic and metal parts.

Try Materials.Ai

Urethane Casting Materials



Opaque Elastomer

Waterclear Elastomer


ABS-Like is a general purpose polyurethane plastic that simulates ABS thermoplastic. This material is a great choice for most product enclosures.

Urethane Casting
All colors; precise pantone color matching available
General purpose, product enclosures

Urethane Casting Case Study

"I love the web portal — it’s quick, simple, and easy to use. The instant feedback is a great way to check my work and then make any necessary revisions to improve the design or lower the cost."

Preston Fung

R&D Engineering Manager, Lim Innovations

Hundreds of quality parts for prosthetic devices icon

Hundreds of quality parts for prosthetic devices

10 day production icon

10 day production

Fictiv Urethane Casting Advantages

From Prototype to Production

Concept stage

Looks-like models for marketing photography, investor pitches, and trade shows

Early prototyping stage

Prototype elastomeric parts such as complex gaskets

Late prototyping stage

Cost effective way to produce 100 EVT units before cutting injection molding tool

Low-volume production

Low-volume production orders for customized, small-batch products (20-200 units at a time)

Our Quality Promise

  • Inspection reports included with every order
  • 100% visual inspection for every part
  • Highly vetted urethane casting partners
  • Quality guaranteed. If your parts aren’t made to spec, we’ll make it right.

Technology Overview

What is Urethane Casting

About the Urethane Casting Process

Urethane casting (also known as RTV molding, cast urethane, and silicone molding) is a fabrication method that uses silicone molds to produce production-quality plastic parts.

Urethane Casting production consists of three main steps:

1. Build a master pattern using 3D printing or CNC machining
2. Build the mold by pouring platinum silicone around master
3. Pour liquid polyurethane resin into mold, create polyurethane casting under vacuum

Advantages of Urethane Casting

With urethane casting, you can get production quality parts at low volumes and without the high costs and lead times of steel or aluminum tooling. This is helpful for bringing new products to market where you may want production-grade products to test with new customers and markets and validate your design hypotheses before making a substantial investment to scale manufacturing.

Urethane Casting Design Considerations

If you are familiar with designing parts for injection molding, you can apply the same best practices and rules of thumb to design parts for urethane casting.


Your Guide to New Product Introduction (NPI)

Developing a new product and bringing it to market is a massive undertaking, but it’s also what drives the advancement of any industry. The Harvard Business Review says that “ideally, a successful new product can set industry standards—standards that become another company’s barrier to entry—or open up crucial new markets.”  Not every product can pace […]

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Manufacturing Costs of 3D Printing vs Urethane Casting vs Injection Molding

3D printing, urethane casting, and injection molding: they’re each suited to different stages of the product development and production process, but how do you know when to use each one? A few factors go into this decision: cost, lead time, and quality. In this article, we’ll discuss indirect and direct costs and lead times for […]

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