Once the domain of the military and racecars, polyurethane bushings did not become widely available until the 1930s. As they don’t rot or deteriorate, they often outlast the vehicle they’re put on. For anyone looking to upgrade their suspension, poly bushings are a great choice. Here’s how poly stacks up against rubber:

Rubber and polyurethaneproperties

No matter what you decide, Poly-Tek can help. Feel free to give us a call at 1(510)895-6001 or email us at [email protected] to discuss your suspension bushing needs.

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On the other hand, rubber bushings are more flexible and have a higher level of elongation, which can make them better suited for applications that require a lot of movement or vibration damping. They are also generally less expensive and easier to manufacture than polyurethane bushings.

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Polyurethane bushings and rubber bushings are both commonly used in a variety of automotive and mechanical applications to provide a flexible connection between two parts, allowing for movement and vibration damping. However, there are several key differences between the two materials that can affect their performance and suitability for different applications.

Car bushings are small suspension components that reduce friction between the metal parts of your vehicle. Made from shock absorbent materials, usually urethane or rubber, they are crucial to ensuring a smooth ride. Though they’re not the only reason your car might shake, they’re usually the prime suspect. For something that makes such a big difference, bushings are surprisingly simple.  They consist of just two parts: an outer (usually metal) sleeve and a spongy interior. But, like most suspension components, they don’t last forever.

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As their lifespan varies widely depending on driving style and environment, there’s no set interval for bushing replacement. Instead, mechanics recommend replacing them when you notice the following symptoms:

Naturalrubber and polyurethane

Overall, the choice between polyurethane and rubber bushings will depend on the specific requirements of the application and the performance needs of the vehicle or system. Polyurethane bushings may be the better choice for applications that require more support and stability, while rubber bushings may be more suitable for applications that require a lot of vibration damping or are less demanding in terms of wear and tear.

Another key difference between the two materials is their durability and resistance to wear. Polyurethane bushings are much more resistant to wear and tear than rubber bushings, and they tend to last longer in demanding applications. They are also more resistant to temperature extremes, which can make them a better choice for use in high-performance vehicles or in harsh environments. As a rubber molding company, let Poly-Tek assist you in the choice between the two materials.

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Honestly? It depends. For people who prefer leisurely cruises down Main Street, rubber is often the right choice. It dampens vibration much more effectively than poly and ensures a comfortable ride. Unfortunately, rubber bushings are also costlier and require replacement. If you have a lead foot, on the other hand, poly bushings are probably the way to go. In addition to their durability, they also provide increased performance and better handling.

Much more pliable than polyurethane, rubber is a great choice for those looking for a bit more give in their suspension. It’s also what comes standard on most vehicles. If you’re fine with how your car drove up until it started shaking, rubber might be the way to go. Here’s where rubber bushings stand on nine key traits:

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One major difference between polyurethane and rubber is their mechanical properties. Polyurethane is a much stiffer and stronger material than rubber, with a higher tensile strength and a lower level of elongation. This means that polyurethane bushings can provide more support and stability to the parts they are connecting, while also being less prone to deformation or wear over time.