Custom Liquid Silicone Rubber (LSR) Injection Molding Services
Precision molding solutions for high-performance silicone components,from prototyping to mass production.
Custom Liquid Silicone Rubber (LSR) Injection Molding Services
Custom LSR molding solutions for medical, consumer, and industrial silicone parts, from prototyping to mass production.
What Is Liquid Silicone Rubber (LSR) Injection Molding?
Liquid silicone rubber (LSR) injection molding is a high-precision manufacturing process used to produce custom silicone parts with excellent consistency, flexibility, and durability. It is ideal for components that require clean molding, complex geometries, and stable performance in demanding applications.
As an experienced LSR injection molding manufacturer, Coolnice uses a closed molding system to meter, mix, and inject platinum-cured liquid silicone into heated molds. This process supports repeatable production, low flash, and efficient manufacturing for both prototype and mass-production projects.
LSR injection molding is widely used for medical components, baby care products, consumer goods, seals, valves, diaphragms, buttons, and other high-performance silicone parts that require biocompatibility, temperature resistance, and long-term dimensional stability.
- Custom LSR parts for complex and high-precision designs
- Support for prototype, low-volume, and mass production
- Clean, consistent molding with minimal post-processing
- Suitable for medical, consumer, and industrial applications
LSR Materials, Grades, and Material Selection
Liquid silicone rubber (LSR) is typically supplied as a two-part, platinum-cured material system for high-precision injection molding. Its low viscosity before curing allows it to fill complex mold cavities efficiently and support the production of detailed silicone parts with stable quality.
Different LSR grades can be selected based on part function, hardness, transparency, color requirements, environmental exposure, and compliance needs. Our engineering team helps match the most suitable material to each custom project for better moldability, part consistency, and long-term performance.
Choosing the right LSR grade at the beginning of a project helps improve processing stability, reduce material waste, and achieve more reliable molded silicone parts.
Typical LSR Material Selection Factors
Selected according to softness, sealing performance, and structural support needs.
Available for clear, translucent, or color-matched silicone part requirements.
Material choice depends on heat resistance, chemical exposure, and long-term use conditions.
Grades can be selected based on medical, baby care, food-contact, or industrial application needs.
We support prototype development, material selection, mold design, and mass production for precision silicone components.
How LSR Injection Molding Works
LSR injection molding is a highly automated process used to manufacture precision silicone parts with consistent quality, tight tolerances, and efficient cycle times. It is especially suitable for custom parts that require clean molding, repeatability, and minimal post-processing.
During production, the two liquid silicone components are accurately metered and mixed before being injected into a closed, heated mold. Under controlled temperature and pressure, the material cures rapidly into a stable elastic part, which is then demolded and prepared for inspection or downstream assembly.
This process supports prototype development, low-volume runs, and mass production for medical, baby care, consumer, and industrial silicone components.
Our LSR Injection Molding Capabilities
Our LSR injection molding capabilities are designed to support precision,
consistency, and scalable production.
• Dedicated LSR injection molding machines with automated control
• Precision cold runner systems for reduced material waste
• Tight tolerance control for complex and thin-wall components
• Stable mass production for medical, consumer, and industrial applications
Production parameters are optimized to ensure repeatability and long-term stability.
Custom LSR Parts and Injection Molding Capabilities
Explore our LSR molding process, tooling capability, and custom silicone parts for prototype to mass-production projects.
Suitable for stable and efficient production of precision liquid silicone rubber components.
Supports repeatable molding with consistent quality and reduced manual handling.
Custom mold design and tooling support for complex liquid silicone rubber parts.
Metering, mixing, injection, curing, and demolding for high-precision silicone parts.
Seals, gaskets, valves, diaphragms, and other custom liquid silicone rubber components.
Optimized mold solutions for higher-volume production and improved manufacturing efficiency.
Why Choose Coolnice for LSR Injection Molding
We focus on custom liquid silicone rubber injection molding with an emphasis on process stability, precision, and scalable production. From early engineering review to stable mass manufacturing, we support projects that require reliable silicone part performance and consistent part quality.
We also support OEM and ODM silicone manufacturing programs for medical, consumer, baby care, and industrial applications, with quality control integrated from incoming material inspection to in-process monitoring and final inspection.
From material verification to process monitoring and final inspection, we maintain a controlled workflow to support reliable LSR molding quality across prototype and production orders.
Frequently Asked Questions About LSR Injection Molding
We manufacture a wide range of custom LSR parts, including seals, gaskets, valves, diaphragms, buttons, medical components, baby care parts, and other precision silicone products based on customer drawings or samples.
Yes. We support prototype development, low-volume production, and mass manufacturing for custom liquid silicone rubber parts, depending on project requirements, mold design, and expected order volume.
LSR injection molded parts are widely used in medical, baby care, consumer, electronics, automotive, and industrial applications because of their flexibility, temperature resistance, biocompatibility, and long-term durability.
We support different LSR material grades based on hardness, transparency, color, and application requirements. Material selection can be matched to medical, baby care, consumer, and industrial silicone part projects.
We can support projects that require additional processing such as overmolding, trimming, inspection, and selected secondary assembly steps, depending on the structure and function of the silicone part.
The right LSR material depends on part geometry, softness, transparency, operating environment, compliance requirements, and production volume. Our engineering team can recommend a suitable grade based on your drawings, samples, or application needs.
For an accurate quotation, it is helpful to provide 2D or 3D drawings, material requirements, part dimensions, tolerance expectations, estimated order quantity, and any special performance or compliance needs.
Yes. After prototype verification, we can continue with mold optimization, process adjustment, and stable mass production for custom LSR parts to support long-term manufacturing programs.
Start Your LSR Injection Molding Project
Technical support from material selection to stable mass production.
