Tight Tolerances for Complex Parts
Durable, Biocompatible & Heat-Resistant
Efficient High-Volume production with Minimal Waste
Liquid silicone rubber (LSR) molding produces flexible, durable silicone parts with high precision and consistency. It involves injecting a two-part liquid silicone material into a heated mold, where it cures quickly into its final shape. This process is ideal for creating complex geometries, thin walls, and fine details that are difficult to achieve with other molding methods.
Fathom’s customers in the medical, automotive, electronics, and consumer products industries use our LSR molding because the material offers excellent heat resistance, chemical stability, and biocompatibility.
The process supports high-volume production with minimal waste, making it both efficient and reliable for parts that demand tight tolerances and long-term performance.
Fathom’s LSR molding process enables the production of highly complex, precision parts with tight tolerances and consistent quality. We can easily accommodate intricate geometries, thin walls and integrated features that are difficult to achieve with traditional rubber molding.
LSR molding supports both low- and high-volume manufacturing while maintaining excellent repeatability and efficiency. It also allows for automation, multi-cavity molds, and overmolding onto other materials, expanding design and functional possibilities.
LSR molding delivers tight tolerances and highly repeatable part quality, even for complex geometries and demanding high-volume production environments.
Liquid silicone rubber provides outstanding heat resistance, chemical stability, flexibility and long-term durability across a wide range of operating conditions.
The low viscosity of LSR allows it to flow easily into intricate mold features, fine details, and very thin wall sections without defects.
LSR molding is well suited for fully automated, closed manufacturing systems, making it ideal for cleanroom, medical and contamination-sensitive applications.
The process generates minimal material waste and supports fast, consistent cycle times once tooling and parameters are fully optimized.
Precision molds and specialized injection equipment require a higher upfront investment compared to simpler molding or fabrication methods.
Design validation, tooling fabrication and process optimization can extend the time required before full-scale production can begin.
LSR offers fewer variations in hardness, color and mechanical properties compared to thermoplastics or some other elastomer materials.
Partner with Experts Who Get It Right the First Time
Every project is reviewed by a seasoned manufacturing engineer to optimize part design, material selection, and tooling strategy — ensuring smarter decisions before steel is cut and production begins.
Medical & Healthcare Devices
Liquid silicone rubber molding is widely used to produce medical components such as seals, valves, tubing and wearable devices due to its biocompatibility, sterilization resistance and ability to meet strict regulatory and cleanliness requirements.
Automotive Seals & Components
LSR molding is commonly applied in automotive applications to manufacture gaskets, connectors and vibration-dampening parts that must withstand extreme temperatures, fluids and long-term mechanical stress.
Electronics & Electrical Insulation
In electronics, liquid silicone rubber is used for protective covers, keypads and insulating components because it offers excellent electrical insulation, moisture resistance and durability in compact, complex designs.
Consumer & Industrial Products
LSR molding supports the production of consumer and industrial items such as baby products, kitchenware and industrial seals, combining flexibility, safety and durability.
Injection Molding Done with Expertise — Not Just Automation
Fast quoting is just the beginning. At Fathom, you get real engineering insight, proactive DFM guidance, and a streamlined path from prototype to full production — all backed by hands-on manufacturing experience.
LSR molding is a process where liquid silicone is injected into a heated mold to produce durable, flexible and high-precision parts.
LSR molding is widely used in medical, automotive, electronics and consumer product industries due to its material performance and reliability.
The process offers excellent precision, fast production cycles, material durability and the ability to create complex part designs.
Yes, medical-grade LSR is biocompatible, sterilization-resistant and commonly used in healthcare devices and components.
Yes, the low viscosity of liquid silicone allows it to fill intricate mold cavities and create detailed, thin-walled parts.
LSR parts are highly durable, offering strong resistance to heat, chemicals, UV exposure and long-term wear.
LSR molding uses a liquid material and automated injection process, while traditional rubber molding often involves solid compounds and slower curing methods.
Yes, LSR molding is well suited for high-volume manufacturing with consistent quality and minimal material waste.
Common products include seals, gaskets, medical components, keypads, connectors, and protective covers for industrial and consumer use.
Partner with Experts Who Get It Right the First Time
Every project is reviewed by a seasoned manufacturing engineer to optimize part design, material selection, and tooling strategy — ensuring smarter decisions before steel is cut and production begins.
