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Liquid Silicone Rubber Molding

Liquid silicone rubber molding has been in action since the 1970s, it has become the go-to manufacturing technique for producing rubber parts and its products. One of the distinctive features of LSR is different compared to molding conventional high-consistency silicone and injection molding processes.

Nice Rapid liquid silicone rubber molding services are used in wide range industries such as electronics, aerospace, general industrial markets, infant care, automotive, and other specialized industrial sectors just to mention a few. LSR is suitable for long-run and short-term part production, at our shops we also use this technique during the final phase of prototyping. Here is Nice Rapid we also use the LSR process to evaluate different material configurations before mass-production is rolled out.

As one of the leading and premier injection molding firm. Nice Rapid work exclusively with liquid silicone rubber molding, over our extensive years in operation we have produced billion of parts and components to fortune 500 companies and other top businesses worldwide. At our shops, we have the technical know-how and expertise to provide you with world-class services from prototyping to large-scale production with higher precision and quality.

Nice Rapid’s capability to provide high-quality and fast services has underlined our stellar reputation and commitment towards satisfaction as well as producing parts and components that adhere to international standards.

The characteristics of LSR

For nearly more than 40 years, a lot of firms and industries mainly use liquid silicone rubber molding to manufacture rubber parts owing to their manufacturability of its raw-materials. The injection molding of liquid silicone rubber provides both manufacturers and clients with improved productivity, consistency in part quality, high-volume molding, and the ease of production and processing.

Due to the unique properties of liquid silicone rubber, it has become the ideal material for the production of unique parts and applications. Some of the unique traits of liquid silicone rubber molding include:

Biocompatibility: Under intense testing, LSR shows traits of superior compatibility with body fluids and human tissue. When compared to elastomers, LSR is resistant to bacterial growth and will neither corrode nor stain other materials.

It's also odorless and tasteless which means that it can be easily formulated with the strict FDA guidelines and policies. These resultant materials can also be sterilized with a wide variety of methods such as e-beam, ethylene oxide (ETO), gamma, and steam autoclaving just to mention a few.

Durable: LSR can withstand high temperatures, this makes it ideal to manufacture parts and components closer to engines or under the hood of cars. The parts created/fabricated via LSR are fire resistant and will not melt, melting is a serious problem associated with components or parts created through plastic injection molding.

Chemical Resistance: LSR is resistant to oxidation and water as well as some other chemical solutions such as alkali and acids.

Temperature resistance: In comparison to other elastomer materials and components, the molded silicones have the abilities to withstand either high or low temperatures.

Mechanical properties: Liquid silicone rubber comes with excellent elongation features, high tensile and tear strength, good flexibility, and toughness/hardness range ranging between 5 to 80 Shores A.

Electrical Properties: LSR has perfect insulating properties making it the perfect solution Fr a wide variety of electrical applications. When compared to traditional insulating materials, silicone can perform in lower and higher temperatures.

silicone rubber molding nipple

LSR Injection Molding

Nice Rapid is capable to provide high efficiency and high quality production tooling to customers in medical, baby electronic, automotive etc.

silicone rubber molding


Our liquid silicone rubber molding is a fast and reliable process for custom prototypes and high-volume manufacturing. We can make 100,000+ parts fast either one time or on a regular basis.

Materials and part design

By observing all the fundamental rules and designs of liquid silicone rubber parts, manufacturers now can produce robust parts that are easy and simple to fabricate. The injection molding of LSR involves complex and intricate tasks that come with plenty of structural and functional factors that engineers and designers must factor in:

  • The intended/original use of the part.
  • How the part will fit during the assembly.
  • The experience of the parts in use.

Benefits of liquid silicone rubber molding

Nice Rapid use liquid silicone rubber molding to manufacture a wide range of precision, over-mold assemblies, and flashless silicone parts. LSR comes with a myriad of benefits such as:

  • Compatible with high-volume production
  • Minimal chance of contamination
  • High level of automation
  • Fast and quick cycle time
  • Comes with advanced and enhanced safety features

Contact our representatives and learn how we can make you liquid silicone rubber molding a reality. When you are ready to start your project, feel free to contact us and we will send you a quote in the next 24 hours.


Due to its low compression set, great stability and resistance of extreme temperatures of heat and cold, liquid silicone rubber (LSR) is ideally suitable for production parts. We are capable to provide high efficiency and high quality production tooling to customers in medical, baby feeding, electronic, automotive etc. Silicone rubber has nearly limitless uses across nearly every industry. Silicone rubber can be made in both small and large quantities, and are available in many different colors.

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