Get A Quote

Precision LSR Injection Molding for Demanding Applications

Fecision stands as a premier manufacturer of high-precision molds and custom-molded products, offering specialized Liquid Silicone Rubber (LSR) Injection Molding services tailored to meet the exacting requirements of today’s most demanding industries.
See how it works

Start your project now

ISO 9001:2015 Certified Processes

ISO 14001:2015 Certified Processes

ISO 45001: 2018 Certified

ISO 13485: 2016 Medical Device

IATF16949:2016 Automotive

High-quality LSR Injection Molding Services by Fecision

Our LSR Injection Molding Services

We understand the critical nature of your components, and our processes are designed to ensure optimal performance and reliability, backed by a robust quality management system and a portfolio of industry-leading certifications.

LSR Injection Molding

LSR Injection Molding involves injecting liquid silicone rubber—a two-component material—into a heated mold. Unlike traditional thermoplastic injection molding, LSR is a thermosetting material, meaning it retains its shape and properties once cured, making it perfect for demanding applications.

Fecision's Service

At Fecision, we specialize in LSR injection molding, delivering customized solutions for industries such as medical, automotive, electronics, and consumer goods. This process is ideal for creating complex, high-performance components that meet stringent quality and regulatory standards.

What is Liquid Silicone Rubber (LSR)

Understanding LSR Injection Molding

Liquid Silicone Rubber (LSR) is a high-purity, versatile thermoset elastomer renowned for its exceptional performance characteristics. It is a two-part, platinum-cured silicone system (typically an A component and a B component mixed in a 1:1 ratio) that, once cured, offers a unique combination of properties making it an ideal choice for a vast array of demanding applications.

★ Outstanding thermal stability
★ Excellent chemical resistance
★ Inherent biocompatibility and hypoallergenic nature
★ Superior durability and tear strength
★ Electrical insulation properties
★ Can be easily pigmented for color-coding or aesthetic purpose

The LSR Injection Molding Process

At Fecision, the LSR injection molding process is a highly precise and automated manufacturing method designed to produce complex, high-quality silicone parts with exceptional consistency and efficiency. Our process leverages advanced technology and stringent controls to ensure optimal results for every component.

Get A Quote

1. Material Preparation

The two components of the LSR material (Part A and Part B) are precisely metered and mixed in a 1:1 ratio using specialized pumping and mixing equipment. This ensures a homogenous mixture is delivered to the injection unit, free from air entrapmen.

2. Tooling (High-Precision Mold Manufacturing)

The molds are typically made from hardened steel to withstand the processing temperatures and pressures, and often feature complex geometries, tight tolerances, and optimized runner and gating systems to ensure efficient material flow and part formation.

3. Injection

The molds are typically made from hardened steel to withstand the processing temperatures and pressures, and often feature complex geometries, tight tolerances, and optimized runner and gating systems to ensure efficient material flow and part formation.

4. Curing (In-Mold)

Once the mold cavity is filled, the LSR material cures rapidly within the heated mold. The platinum-catalyzed curing reaction is a thermosetting process. The material undergoes an irreversible chemical change to form a stable, cross-linked elastomeric part.

5. Demolding

After the curing cycle is complete, the mold opens, and the finished LSR parts are ejected or manually removed. Due to LSR's flexibility, part removal can sometimes be automated, further enhancing production efficiency, especially for high-volume applications.

Get Molded Parts

Throughout this entire process, Fecision's advanced machinery and sophisticated process control systems continuously monitor and adjust critical parameters, ensuring that every part produced meets the highest standards of quality and precision.

LSR Injection Molding Expertise

Fecision's LSR Injection Molding Capabilities

We are equipped to handle projects of varying complexity and scale, ensuring optimal outcomes that meet your specific application needs.
Advanced LSR Injection Molding Equipment

Advanced Equipment

Our workshop is equipped with high-precision LSR injection molding machines, capable of handling a wide range of part sizes and complexities.
Get A Quote
LSR Injection Molding Material

Material Expertise

Our team possesses extensive expertise in selecting and processing a diverse portfolio of LSR grades to match the unique demands of each application.
Get A Quote

Precision Tooling

Fecision boasts comprehensive in-house mold design and manufacturing capabilities specifically tailored for LSR injection molding.
See More

Value-Added Services

Our services include post-molding operations like precision deflashing to remove any residual material, custom packaging solutions to protect your parts.
Get A Quote

Fecision LSR Injection Molding Equipments

Our dedication to quality is validated by an extensive portfolio of prestigious certifications, demonstrating our adherence to the most rigorous global standards.

Design Considerations for LSR Injection Molding

To optimize designs for LSR injection molding, consider the following guidelines:

Wall Thickness

Maintain uniform wall thickness to ensure even curing.

Draft Angles

Include appropriate draft angles to facilitate demolding.

Gate Placement

Strategically place gates to minimize visible marks on the part.

Undercuts

Minimize undercuts or design for side actions if necessary.
★ Our experienced engineers are available to provide design guidance, ensuring your parts are optimized for LSR molding.

Utilize Inherent Benefits

Advantages of LSR Injection Molding

Liquid Silicone Rubber (LSR) injection molding offers a multitude of advantages that make it a preferred manufacturing process for a wide range of critical components, particularly those requiring high precision, exceptional material performance, and suitability for demanding environments.

Fecision harnesses these inherent benefits to deliver superior quality parts to our clients.

Complex Part Geometries & High Precision

The low viscosity of LSR allows it to flow easily into intricate mold cavities, enabling the production of highly complex part geometries, thin walls, and fine details with exceptional precision.Fecision's expertise in mold design and process control ensures that these complex designs are manufactured with tight tolerances and remarkable accuracy.

Excellent Material Properties

LSR's inherent durability and resistance to tearing and fatigue ensure long service life even under stress. LSR maintains its flexibility and mechanical properties across a broad temperature spectrum, from as low as -60°C to over 200°C, making it suitable for applications exposed to extreme thermal conditions. Furthermore, its excellent chemical inertness provides resistance to a wide array of chemicals, oils, and solvents. For medical and food-contact applications, the biocompatibility and hypoallergenic nature of specific LSR grades are paramount, ensuring safety and compliance.

Consistency & Repeatability

The LSR injection molding process delivers exceptional part-to-part consistency and repeatability.The stable nature of the LSR material and the precision of the molding process minimize variations, ensuring reliable performance of the final product.

Automation & Efficiency for Scalable Production

LSR's rapid curing cycle and the potential for automated demolding make the injection molding process highly efficient and suitable for large-scale production. This automation reduces cycle times, minimizes manual labor, and lowers per-part costs, especially in high-volume scenarios.

Inherent Cleanliness & Suitability for Sterile Applications

LSR is an inherently clean material, producing minimal outgassing and leachables. This characteristic, combined with the ability to mold parts in certified cleanroom environments makes LSR injection molding an ideal choice for medical devices, pharmaceutical components, and food-grade applications where sterility and purity are non-negotiable. The smooth, non-porous surface of LSR parts also resists bacterial growth and is easy to clean and sterilize.

Applications & Industries Served

Fecision’s advanced Liquid Silicone Rubber (LSR) injection molding services cater to a diverse range of industries that demand high-performance, precision-engineered components. Our expertise in handling various LSR grades, including specialized medical-grade silicone (USP Class VI, biocompatible), coupled with our stringent quality control and extensive certifications (ISO 13485, IATF 16949, GMP Cleanroom), makes us a trusted partner for critical applications.

Medical & Healthcare

The medical and healthcare sector is a primary focus for Fecision’s LSR injection molding capabilities. The inherent properties of LSR, such as its biocompatibility, chemical inertness, sterilizability, and durability, make it an ideal material for a wide array of medical devices and components. We manufacture parts that come into direct patient contact, as well as components for diagnostic and surgical equipment.

Applications

Seals, Gaskets, O-rings for diagnostic equipment, infusion pumps and respiratory devices; Diaphragms and Valves for fluid management systems, drug delivery devices and medical pumps. Parts for wearables, catheters, respiratory masks and dental applications; Surgical Instrument Components like Handles and Grips; Drug Delivery Components like Plungers and Stoppers.
See More

Automotive

The automotive industry relies on LSR for components that must withstand harsh operating conditions, including extreme temperatures, exposure to fuels and oils, and constant vibration. Fecision provides durable and reliable LSR solutions that meet the stringent requirements of this sector, supported by our IATF 16949 certification.

Applications

Seals and Gaskets for engine components, transmission systems, lighting assemblies, and HVAC systems; Connectors and Cable Seals; Vibration Dampeners and Bushings; O-rings and Custom Sealing Solutions; Components for Sensors and Lighting Systems like Housings, Seals, and Light guide
See More

Electronics

Electronics: LSR is increasingly used in electronics due to its soft-touch feel, durability, water resistance, and ability to be molded into intricate designs.

Applications

Keypads and Buttons for remote controls, mobile phones and other electronic devices; Seals and Gaskets for portable electronics, wearables and outdoor equipment; Protective Coverings and Casings for smart devices; Components for Wearable Technology like Wristbands Seals and Sensor Housings
See More

Industrial Components

Fecision serves various industrial sectors with LSR components designed for reliability and performance in demanding operational environments. These applications often require resistance to chemicals, extreme temperatures, and mechanical stress.

Applications

Seals, Valves, Membranes for industrial equipment, pumps and fluid handling systems; Gaskets and O-rings for a wide range of industrial machinery and processing equipment; Electrical Insulators and Connectors
See More

Your Strategic Partner for Connector Mold Success

The Fecision Advantage: Why Partner With Us?

Quality & Certifications
We have certifications including ISO 9001, ISO 13485 (Medical), IATF 16949 (Automotive), GMP Certified Medical Cleanroom (Part 820), Class 100,000 Cleanroom, ISO 14001, ISO 45001, and QC080000.
Expertise & Experience
Our engineers and technicians understand the nuances of LSR materials, tooling design, and process optimization, enabling us to tackle complex challenges and deliver innovative solutions.
 
Facilities & Technology
Our modern machinery, coupled with process control systems and cleanroom environments, ensures precision, efficiency, and production of components to meet the demanding specifications for purity and performance.
End-to-End Solutions: From Concept to Component
Our services span the entire product lifecycle, from initial design consultation and material selection, through precision mold design and fabrication, to high-volume LSR part production, and value-added services such as custom packaging.
Proven Track Record with Industry Leaders
Fecision has a proven history of successfully partnering with leading companies across diverse industries, including medical, automotive, and consumer electronics. We pride ourselves on building long-term partnerships based on trust and mutual success.
Customer-Centric Approach & Collaborative Partnership
Our team is dedicated to providing responsive communication, proactive problem-solving, and tailored solutions that align with your specific needs. We view ourselves as an extension of your team, committed to helping you achieve goals efficiently and effectively.

Validated Performance, Guaranteed Quality

Quality & Certifications

Fecision has implemented a comprehensive quality assurance framework, underpinned by internationally recognized certifications and stringent internal processes, to ensure every part we deliver meets the highest standards of excellence, precision, and reliability.
QC080000
ISO45001
Patents

Recent Projects

LSR Injection Molding Part 1

Nipple

LSR Injection Molding Part 2

Respiratory mask parts

LSR Injection Molding Part 7

Bottom silicone pad

LSR Injection Molding Part 8

Earplugs

LSR Injection Molding Part 6

Silicone strap

LSR Injection Molding Part 5

Audio button

LSR Injection Molding Part 3

Liquid-proof stopper (dialyser)

LSR Injection Molding Part 4

Earphone seal

Let's Start!

Take the next step towards realizing your high-performance Liquid Silicone Rubber components.

We are committed to providing tailored solutions that meet your specific application needs and project timelines.
Get a quote

LSR Injection Molding FAQs

LSR offers superior flexibility, temperature resistance, biocompatibility, and chemical resistance. It also provides high durability and can be customized with additives for specific properties.
Yes, LSR is widely used in medical devices due to its biocompatibility, purity, and compliance with stringent FDA and USP standards.
Production times vary, but Fecision can deliver custom prototypes in as little as 15 days, with production parts following shortly thereafter.
Absolutely. We can incorporate additives to achieve properties like antimicrobial, self-lubricating, or electrical conductivity
Industries such as medical, automotive, electronics, consumer goods, and industrial applications benefit greatly from LSR’s unique properties.

Related Resources

What Is LSR Injection Molding?
18Mar

What Is LSR Injection Molding?

LSR molded parts maintain stable performance over a wide temperature range, making them ideal for automotive parts in extreme environments. Let’s learn more.

Read More
LSR Injection Molding vs. HCR Injection Molding? A Complete Guide for Medical and Industrial Use
01May

LSR Injection Molding vs. HCR Injection Molding? A Complete Guide for Medical and Industrial Use

Compare LSR injection molding vs. HCR injection molding for medical and industrial use. Learn pros, cons, and applications of each silicone molding method.

Read More
What Is the Difference Between HCR and LSR?
12May

What Is the Difference Between HCR and LSR?

Choosing between HCR and LSR for your medical device? This guide compares high consistency rubber and liquid silicone rubber, highlighting key differences in properties, processing, and medical-grade considerations to help you make the right choice.

Read More

Start your project now