What Do You Know About LSR Injection Molding?

Feb. 24, 2023

Injection molding is one of the most widely used manufacturing processes in the world, offering a variety of benefits, including high production volumes, design flexibility, and cost-effectiveness. One specific type of injection molding, called LSR injection molding, has become increasingly popular in recent years due to its unique properties and capabilities. 

What Do You Know About LSR Injection Molding?cid=8

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What is LSR Injection Molding?

LSR stands for Liquid Silicone Rubber, which is a synthetic elastomer made of silicone and carbon-based molecules. LSR injection molding is the process of injecting liquid silicone rubber into a mold cavity to create a final product. This process is similar to traditional injection molding, but LSR materials have different properties that allow for more design flexibility and manufacturing capabilities.

Advantages of LSR Injection Molding:

Design flexibility: LSR materials are highly flexible and can be molded into a variety of shapes and sizes, making it ideal for complex parts and components. It can be used to create parts with intricate geometries and fine details, which would be difficult or impossible with other materials.

Durability and resilience: LSR materials are highly durable and resilient, making them ideal for use in products that require long-term performance and reliability. It can withstand extreme temperatures, moisture, and chemicals, making it a popular choice for medical and automotive applications.

High-quality finishes: LSR materials can be molded into a variety of finishes, including matte, glossy, and textured surfaces, making it an excellent choice for creating visually appealing products.

Biocompatibility: LSR materials are biocompatible, meaning that they are safe for use in medical devices and applications that come in contact with the human body.

Applications of LSR Injection Molding:

Medical Devices: LSR materials are used extensively in the medical industry due to their biocompatibility and durability. They are commonly used in devices such as catheters, surgical tools, and implantable devices.

Automotive Industry: LSR materials are also used in the automotive industry for parts such as gaskets, seals, and O-rings due to their ability to withstand high temperatures and harsh environments.

Consumer Products: LSR materials are used in a variety of consumer products, including kitchen utensils, baby products, and electronic devices.

Aerospace Industry: LSR materials are used in the aerospace industry for applications such as seals, gaskets, and vibration dampeners due to their high-temperature resistance and durability.


LSR injection molding offers a unique set of properties and capabilities that make it an attractive choice for a variety of industries and applications. Its design flexibility, durability, and biocompatibility make it an ideal choice for medical devices and automotive applications, while its ability to create high-quality finishes makes it popular for consumer products. As technology advances and new applications for LSR materials are discovered, we can expect to see continued growth and innovation in the field of LSR injection molding.

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