Plastic Springs

Polyetherimide (PEI) Springs - High Performance Polymer-Plastic Fastener Components

What are plastic springs?

Plastic springs are components made from advanced thermoplastic materials such as Polyether Ether Ketone (PEEK), Polyoxymethylene (POM), Polycarbonate (PC), Polyetherimide (PEI), and Polyphenylsulfone (PPSU). These springs are designed to provide exceptional mechanical strength, chemical resistance, and thermal stability. They are ideal for demanding applications across various industries, including medical devices, aerospace, automotive, industrial machinery, electronics, and food processing. Each material offers unique properties, ensuring that the springs perform reliably under specific environmental conditions, such as high temperatures, corrosive substances, and repeated sterilisation processes.

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What are the benefits of using plastic for springs?

Using plastic for springs offers numerous benefits, particularly when made from polymers such as PEEK, POM, PC, PEI, and PPSU. These springs provide exceptional corrosion resistance, making them ideal for use in corrosive environments, and are significantly lighter than metal
springs, reducing overall weight and easing installation. They offer a high strength-to-weight ratio, excellent thermal stability across a wide temperature range, and are non-magnetic, making them suitable for sensitive applications. Additionally, plastic springs provide superior electrical insulation, low friction, and wear resistance, extending their lifespan. Certain plastics, like PEEK and PPSU, are biocompatible, perfect for medical and pharmaceutical use. Their ability to be moulded into complex shapes offers design flexibility, making plastic springs a versatile and reliable choice for various demanding applications across multiple industries.

Industry applications for plastic springs

Plastic screws, particularly those made from polymers like PEEK, POM, PC, PEI, and PPSU, are used across various industries due to their unique properties. In the aerospace industry, they are utilized in lightweight, high strength fastening applications that require resistance to extreme temperatures and chemicals. In the medical field, biocompatible plastic screws are used in medical devices and implants, benefiting from their sterilisation resistance and non-reactivity. In electronics, they provide electrical insulation and corrosion resistance, making them ideal for securing circuit boards and electronic components. The automotive industry uses plastic screws in engine compartments and electronic systems for their chemical resistance and lightweight properties. Additionally, plastic screws are employed in chemical processing equipment where corrosion resistance is critical, and in food processing machinery where cleanliness and non-contamination are paramount.

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They offer unique advantages that metal screws cannot provide. They are highly resistant to corrosion, making them ideal for use in harsh chemical environments where metal screws would degrade. Their lightweight nature reduces the overall weight of assemblies, which is crucial in industries like aerospace and automotive where weight savings translate to better performance and fuel efficiency. Plastic screws also provide excellent electrical insulation, preventing electrical shorts in electronic devices. Additionally, they have high strength-to-weight ratios, are non-magnetic, and can withstand a wide range of temperatures. These properties make plastic screws essential for applications requiring durability, reliability, and specialized performance characteristics that metal screws cannot deliver.