LSR Injection Molding Services From China
Formioo offers one-stop LSR injection molding services for both small and large batches. As fast as 7-day delivery.
- Experienced team of mold engineers
- Use imported and top brand local injection molds
- 30+ Certified Materials & Various Customization Options for applications
- Enjoy a full range of other facilities provided by our network partners
- High quality products and customer service delivered within 15 days
LSR Injection Molding Small Batch Production
Formioo is a specialized LSR (Liquid Silicone Rubber) injection molding manufacturer in China, offering precise and efficient manufacturing solutions for flexible, high-performance silicone parts. With advanced injection molding machines, automated metering systems, and temperature-controlled tooling, we support both rapid prototyping and low-to-mid volume production with tight tolerances and excellent repeatability.
Our LSR molding service is ideal for producing complex geometries and thin-walled components that require durability, biocompatibility, and resistance to extreme temperatures. We provide engineering support, including DFM analysis, to optimize part design and help clients avoid costly tooling modifications. Our process ensures consistent shot quality, minimal flash, and reduced cycle time, perfect for industries with strict performance demands.
Since 2016, we have supported thousands of custom silicone parts for clients across automotive, medical, electronics, and consumer product sectors. With stable annual output and a responsive team, we deliver both speed and reliability to help global customers accelerate product development and scale production with confidence.
Our LSR Injection Molding Services
At Formioo, we offer comprehensive LSR injection molding solutions, including single-material molding, multi-material molding, two-shot molding, and in-mold assembly. These capabilities enable us to produce complex, high-precision silicone parts with integrated features and seamless bonding. We work with a wide range of medical-grade and industrial-grade LSR materials such as high-transparency silicone, self-lubricating LSR, and high-tear-strength compounds, suitable for applications requiring flexibility, durability, and biocompatibility.
To further enhance part performance and visual quality, we support various post-processing and surface finishing techniques, including deburring, plasma treatment for better adhesion, and part coating for matte or glossy effects. Our advanced molding equipment and process controls ensure consistent shot quality and tight tolerances of up to ±0.01 mm, meeting the high standards of medical, automotive, and consumer-grade applications.
Uses a single liquid silicone rubber material for molding, suitable for simple parts.
Combines different materials to create parts with enhanced functionality.
Performs two injection cycles to create parts with multiple materials or colors.
Assembles multiple components directly in the mold, reducing post-production assembly.
LSR Injection Molding Capabilities
Material Compatibility
We process liquid silicone rubber (LSR) to produce components with excellent flexibility and durability.
Printing Accuracy
Our standard tolerance is precision-managed to ±0.01 mm to ensure precise and uniform component dimensions.
Maximum Build Size
We accommodate molding sizes up to 500 mm × 500 mm × 500 mm, suitable for a wide range of part sizes.
Surface Finishing Options
We offer an assortment of surface finishes, from matte to glossy, and custom textures, with both form and function.
Delivery Time
Our prototyping molds are ready in 1 to 2 weeks, while manufacturing molds are completed between 4 to 6 weeks, depending on design complexity. Please be informed that for Chinese public holidays, such as National Day or Chinese New Year, delivery timelines will be extended by 10 to 30 days.
Explore LSR Injection Molding Products We Manufactured
Discover the precision and quality of our LSR injection molded parts. From complex prototypes to high-volume production, our components meet the highest industry standards.
LSR Injection Molding Tolerance
| Name | Tolerance Range De |
|---|---|
| Standard LSR Parts | +/- 0.1 mm to +/- 0.3 mm |
| Precision LSR Parts | +/- 0.05 mm to +/- 0.2 mm |
| Complex LSR Parts | +/- 0.2 mm to +/- 0.5 mm |
- *Formioo accommodates part lengths of up to 48", depending on the process. For larger dimensions, please reach out to us for inquiries. The tolerances listed represent minimums under ideal conditions; however, looser tolerances may be necessary based on the process, material selection, or part geometry.
LSR Injection Molding Materials
Standard LSR
Medical LSR is very suitable for injection molding as it meets biocompatibility requirements (e.g., USP Class VI) and is safe for use in medical applications. It is utilized across the board in catheters, implants, and respiratory masks because of its non-toxicity and sterilization for compatibility.
- Mill Lead Time: Up to 5 days
- Color: Clear, white, black
Medical-Grade LSR
Medical LSR is very suitable for injection molding as it meets biocompatibility requirements (e.g., USP Class VI) and is safe for use in medical applications. It is utilized across the board in catheters, implants, and respiratory masks because of its non-toxicity and sterilization for compatibility.
- Mill Lead Time: Up to 7 days
- Color: Clear, white, blue
Food-Grade LSR
Food-grade LSR is injectable into mold because it meets LFGB and FDA requirements, rendering it safe for food contact. It is used in baking molds, bottle nipples, and food seals owing to its heat-stable and non-toxic nature.
- Mill Lead Time: Up to 6 days
- Color: Clear, white
High-Transparency LSR
High-transparency LSR is appropriate for injection molding where optical clarity and UV resistance are required. It is widely utilized in optical lenses, clear seals, and trim components for appearance and performance.
- Mill Lead Time: Up to 7 days
- Color: Clear
Flame-Retardant LSR
Flame-retardant LSR finds the best application in injection molding for electronics and semiconductor applications on the basis of its UL 94 V-0 rating. It is applied extensively to insulation of wires, electrical seals, and connectors owing to its fire-resistant feature.
- Mill Lead Time: Up to 6 days
- Color: Black, gray
Conductive/Anti-Static LSR
Conductive/anti-static LSR finds its best application in aerospace and automobile applications through injection molding in electronics and semiconductor applications. Conductive/anti-static LSR is applied in anti-static seals, conductive gaskets, and electronic components to prevent static discharge.
- Mill Lead Time: Up to 6 days
- Color: Black, gray
High-Temperature LSR
High-Temperature LSR is best utilized in injection molding for high-temperature applications, where it can withstand heat up to 250°C. High-Temperature LSR is commonly utilized in automotive engine seals, oven seals, and industrial heater components.
- Mill Lead Time: Up to 7 days
- Color: Black, red
Self-Lubricating LSR
Self-lubricating LSR has optimal application for injection molding in low-friction applications. It is utilized in seals, bearings, and sliding parts, where low friction and lower wear are essential.
- Mill Lead Time: Up to 5 days
- Color: Clear, white
High-Strength LSR
LSR with high strength is best injection molded in high-stress scenarios with its excellent mechanical properties. It is used for industrial seals, wear pads, and mechanical components depending on its toughness.
- Mill Lead Time: Up to 7 days
- Color: Black, blue
Specialty LSR
Specialty LSR is used in injection molding for specialty applications such as antimicrobial medical devices or chemically resistant seals. It is also used in the industrial and health industries for its specific function.
- Mill Lead Time: Up to 8 days
- Color: Clear, white, black
Finishing Options for LSR Injection Molding
| Name | Applicable Materials | Colors | Can Be Applied with | |
|---|---|---|---|---|
|
Plasma Treatment | Silicone, Rubber | — | Plasma Surface Activation |
|
UV Coating | Silicone, Rubber, Plastic | Clear, Glossy, Matte | UV Curing Process |
|
Polishing | Silicone, Metal | — | Buffing, Tumbling |
|
Anodizing | Aluminum, Metal | Clear, Black, Gold | Media Blasting, Tumbling, Anodizing |
|
Electroplating | Silicone, Metal | Chrome, Gold, Silver | Electroplating Bath |
|
Painting | Silicone, Rubber, Plastic | Custom Colors | Spray, Dip, or Brush Application |
|
Silk Screening | Silicone, Plastic | Multiple | Manual or Automated Process |
|
Laser Etching | Silicone, Metal | — | Laser Machines |
|
Bead Blasting | Silicone, Metal | — | Sandblasting, Abrasive Blasting |
|
Surface Texturing | Silicone, Rubber, Plastic | — | Mold Texturing, Laser Etching |
- *We offer a range of additional finishing options, including chromic acid anodizing, cadmium plating, copper plating, titanium anodizing (blue anodizing), gold plating, silver plating, and more. If you require finishes for materials not mentioned here, please reach out to us directly.
Your LSR Injection Molding Supplier Selection Ultimate Guide
Which LSR injection molding supplier is ideal for your needs? What 3D printing material has excellent tensile strength? Try Materials.Download our lasted supplier guide.
Formioo LSR Injection Molding FAQs
We collect a lot of FAQs from our real clients, and please check out our FAQ page. For more information about Formioo Company, you can also download our company E-catalogue brochure.
Which industries are best suited for LSR Injection Molding?
LSR Injection Molding is most commonly used in the medical, automotive, consumer electronics, and baby care industries. It can provide high-quality, safe, and long-lasting components and is best suited to those components which require a high level of performance and reliability.
What are the materials that LSR Injection Molding works with?
The primary material utilized for this procedure is Liquid Silicone Rubber (LSR). It is softer, more chemically resistant, heat resistant, and biocompatible and therefore suitable for parts requiring the same characteristics.
What is the lead time of LSR Injection Molding production?
Lead times can be negotiated depending on order size and project complexity. Generally, production runs are 4-6 weeks and prototypes are 2-4 weeks. We are able to offer quick prototyping and ramp-up to suit your project schedule.
How do I get a quote for my LSR Injection Molding project?
To get a quote, simply forward us your part specs, your material requirements, production quantities, and any other specs. We will then provide you with a detailed and competitive quote according to your specifications.
Can you work with custom designs?
Absolutely! We specialize in custom designs and can customize according to your specifications.
What credentials do your manufacturing suppliers hold?
Our network is made up of ISO 9001:2015-qualified suppliers to provide high levels of quality.
LSR Injection Molding Resource
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