We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What are the Pros and Cons of Cast Urethane?

By Larry Ray Palmer
Updated May 17, 2024
Our promise to you
AboutMechanics is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At AboutMechanics, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Cast urethane is used for a variety of everyday products. With the various advantages this polyurethane polymer has to offer, it has become a popular choice for many industrial and manufacturing applications covering a broad range of molded parts. The same properties that make this material suitable for some projects, however, also make it a detrimental choice for others.

Cast urethane is a quick mold process. With rapid set up, easy pouring, and simple mold making, urethane is the easy choice for projects that require a strong product in a minimum amount of time. The mold used for this process is made by pressing the prototype into vulcanized rubber to make an impression that will then be used to mold the cast urethane parts. Urethane products created in this way require very little industrial tooling or finishing, as the cast is an exact replica of the prototype.

This quick mold process does have some downsides, however. The finished cast product is only as good as the impression made by the prototype. In addition, the vulcanized rubber mold is only usable for a limited number of castings before the quality of the cast begins to degrade. Also, if there is no prototype, there is no way to make the mold to form the cast urethane.

The second property of cast urethane is its strength in comparison to its weight. Cast urethane can adhere to many metals, or be used to replace metal in a variety of applications to dampen noise and extend the usable life span of certain products. Bearings, pulley wheels, rollers, and wheels made of this material have been used to replace metal parts with very little difficulty. The urethane products offer long lasting strength and durability with minimal need for lubrication. With cast urethane's resistance to abrasion, chemicals, and impact, it can withstand the rigors of mechanical processes better than most plastics and many metals.

While the light weight and brute strength of urethane products offer definite advantages, there are also drawbacks to using cast urethane in some cases. Larger parts may require more in-depth mold making processes and longer curing times before the parts are ready to be used. In addition, urethane bearings and bushings should not be used in machinery that sees regular operating temperature in excess of 212 degrees Fahrenheit (100 degrees Celsius), as these excessive temperatures can cause degradation of the part.

AboutMechanics is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

AboutMechanics, in your inbox

Our latest articles, guides, and more, delivered daily.

AboutMechanics, in your inbox

Our latest articles, guides, and more, delivered daily.