Rubber Injection Molding Service

Rubber injection molding service for both small or large production runs. Get high-quality custom rubber injection parts with precision and efficiency.

Home » Capabilities » Rubber Injection Molding

We are a professional Rubber Injection Molding Factory. We can provide rubber components worldwide.

Rubber injection molding is a common manufacturing process to produce precision rubber components, especially for large-volume production. It starts with injecting heated rubber material into a pre-made mold under high pressure, then it cools and solidifies to form the desired shaped parts. The rubber injection molding is an ideal process to produce complex geometry parts with high repeatability and excellent material consistency, such as seals, gaskets, bellows, and other rubber components.

Erye has decades of experience in rubber injection molding, offering one-stop services from tooling to mass production. For every single project, our engineering team works closely with our clients to help with material selection and part design, ensuring that we meet stringent quality standards.

Let's Start a Rubber Injection Molding Project

Starting your rubber injection molding project is straightforward with our proven 5-step process. From precise part design and material selection to expert mold design and efficient injection molding, we ensure every detail is optimized for success. Let us help you transform your ideas into high-quality, precision rubber injection molded products with ease and efficiency.

Click for Quick Guide

Rubber injection molding part design

Material selection for rubber molding part

Mold design & fabrication

Start rubber injection molding production

Post service to enhance your rubber parts

Step 1. Rubber Injection Molding Part Design

To start your rubber injection molding project, the first step is rubber part design. During the design stage, you need to focus on factors like part geometry, material selection, and functionality. It's essential to collaborate with experts who can help you optimize your design for both production efficiency and cost savings.

At Erye, we are willing to help you check and optimize your design to ensure part performance and manufacturability. At this stage, our engineer conducts a thorough review of your design, offers a Design for Manufacturability (DFM) report which points out potential challenges and offers optimized solutions, to ensure the design is mold-friendly and cost-effective.

Step 2. Material Selection for Injection Molded Rubber Parts

We offer a wide range of injection molded rubber materials to meet the needs of various industries and applications. From standard elastomers to high-performance compounds, the following are the common materials we offer. If you need special compounds please get in touch with Erye for help.

Selecting the correct and suitable material is not only to meet the basic requirements, but also to opimize performance for your product. The right material is able to reach the required lifespan and has the ability to withstand the required usage conditions.

For example, we assist our clients in making material choices based on the specific demands of their project. In some cases, To ensure special requirements in some cases, we use specialized material formula to adjust material properties, so your injection molded rubber parts deliver exactly the performance you need.

Step 3. Rubber Injection Mold Design & Production

Once the part design has been finalized and confirmed the material, the next step is mold & tooling design and production. The injection molding tooling directly influences final product quality, production efficiency, and overall cost.

When design the rubber injection mold, our engineer will review the parts specifications thorougly, taking into account the design, material properties, and production volume. We simulate mold flow analysis to optimzie the mold design and avoid production issues, thereby improving production processes.

Once the mold design is finalized, our manufacturing facility produces the mold using advanced CNC machining centers, EDM, WEDM, and other advanced machines. From intricate part features to cooling channels, our expert mold makers ensure deliver molds that provide long-lasting performance.

Step 4. Mass Production of Rubber Injection Molding

After finishing first run and confirming the samples, the next step is transitioning to mass production. This phase is where design becomes reality, and precision manufacturing begins.

1. Material Preparation

Rubber compound is prepped, potentially including pre-heating or cutting.

2. Injection

Rubber is injected under pressure into a heated mold cavity for curing, which undergoes a vulcanization (curing) process.

3.Vulcanization (Curing)

Heat and pressure induce crosslinking, solidifying the rubber giving it its elastic properties.

4. Demolding (Ejection)

Cured part is ejected, with attention to prevent tearing.

5. Post-Curing and Finishing

Optional post-cure and flash trimming are performed.

We have over 20 sets of advanced rubber injection molding machines, which enable us to handle high precision and large-scale production. Over the past decades, we have produced rubber parts for various industries like automotive, medical devices, and mining. For example, we are able to finish 100,000pcs rubber gaskets within 2 weeks, we ensure to meet our client's high-volume demands without sacrificing quality.

We offer 24/7 production to meet tight deadline demands. Whether you're looking for small-volume production or large-scale manufacturing, our efficient systems and flexible scheduling ensure in-time delivery without compromising on quality.

Step 5. Secondary Process and Quality Inspection

Once the rubber parts are molded, the next step is secondary finishing. This includes a range of processes that enhance the final appearance, functionality, and quality of the molded parts. The following key processes are typically performed:

Surface Finishing

Surface finishing can improve molded parts' appearance and enhance functionality, particularly in parts exposed to harsh environments or mechanical stress. Our finishing service include mold texture that follows SPI and VDI, and secondary finishing like painting, polishing, and laser etching.

Learn More

Assembly

Our custom assembly service includes both manual and automated assembly, such as combining multiple components, adding inserts, integrating electronic parts, etc. We follow the assembly drawing strictly to ensure every part fits perfectly. Furthermore, we can conduct functional tests to verify assembly effects, such as waterproofing or air leaks.

Learn More

Quality Inspection

We perform rigorous quality inspecion during the whole process - before, during and after production process, to guarantess your parts meet the highest standards. We utilize advanced metrology equipment such as CMM (Coordinate Measuring Machines) and laser scanners to ensure every part adheres to exact specifications. In addition, we conduct stress testing and environmental simulations (like temperature resistance and waterproof) when required, to confirm the part’s ability to perform in real-world conditions. Only parts that pass these exhaustive tests are approved for shipment.

Features of Rubber Injection Molding

High Precision and Consistency

Rubber injection molding ensures uniform material distribution, which result in consistent high-quality parts with tight tolerances.

Cost-Effective for High-Volume Production

The process minimizes material waste and has fast cycle times, ensure cost-effective for large production runs.

Complex Part Design Capabilities

Easily produce intricate shapes, fine details like undercuts, rubber injection molding is suitable for high specialized rubber components.

Automation and Efficiency

Rubber injection molding is highly automated, reducing manual labor and improving throughput. The automated operations also ensure consistent quality across large production volumes.

High Initial Tooling Costs

The upfront cost of inejction molds can be expensive, it vary due to the complexity and precision requirement. While the cost can be justified for high-volume production, it may not be cost-effective for small batches.

Longer Lead Times for Tooling

Injection molds require long lead time, usually 6-8 weeks for design, manufacture, and sample test. Depending on the part complexity, this could delay production schedules.

Complex Mold Maintenance

Molds require regular maintenance to ensure longevity and consistent performance. This can incur downtime for repairs, especially if the molds are complex or subjected to high production volumes.

Rubber Injection Molding Cost

How much does rubber injection molding cost is the most concern questions, especially from startups. It's completely understandable that costs for new rubber injection molding parts are crucial and sensitive, particularly when working with a tight budget for a new design.

The primary factors that influence rubber injection molding cost include:

/Part1

Mold Design & Tooling

The more intricate and customized your mold, the higher the initial cost. The material used for the mold and its size also factor in. Simpler molds are more affordable, while custom or complex molds tend to cost more.

/Part2

Material

The material you choose can have a significant impact on the cost. Basic materials like NBR are more cost-effective, while high-performance rubbers like Silicone or FKM will increase the price.

/Part3

Production Volume

The higher the production volume, the lower the per-part cost. For large-scale production, the initial investment in tooling is spread out over more units, reducing the per-unit cost.

/Part4

Part Complexity

Complex design or multiple features require higher cost. More detailed parts demand more precision, which means longer processing times and more work during the molding process.

/Part5

Secondary Services

If you need additional services like assembly, special surface finishing, these will add to the final cost. But they ensure your parts are top-notch.

The cost of rubber injection molding can vary widely depending on several key factors. Understanding these factors will help you get a clearer idea of the overall cost and make more informed decisions.

Related Resources of Rubber Injection Molding

Common Injection Molding Defects and How to Fix Them

Injection molding enabling the mass production of complex plastic parts with high precision and efficiency.

February 11, 2025

12 Useful Tips to Reduce Injection Molding Cost

If you’re looking to cut down on injection molding mold costs, you’re in the right

January 16, 2025

How Much Does Injection Molding Cost

The injection molding cost varies depending on a variety of factors, such as material choice,

January 15, 2025