One-stop LSR OEM ODM Service From Drawing to Mass Production

Introduction

Liquid Silicone Rubber (LSR) has emerged as a high-performance material of choice for industries ranging from medical devices and consumer electronics to automotive and baby products, thanks to its unique combination of biocompatibility, temperature resistance, chemical stability, and design flexibility. For brands looking to bring a new LSR product from concept to shelf, navigating the complex production process—from material selection and prototyping to tooling design and mass manufacturing—often requires coordinating multiple vendors, leading to delayed timelines, misaligned quality standards, and inflated production costs.

At 橡楚（湖北）橡胶有限公司, we recognized this industry pain point: many product designers and brand owners lack the in-house expertise or production capacity to deliver consistent, high-quality LSR parts at scale. To better serve our global partners and streamline access to our end-to-end manufacturing capabilities, we have officially launched our new export website, centralizing all technical resources, service information, and support contact details in one accessible platform. Based at 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, we are a specialized LSR product manufacturer certified to ISO 9001 standards, focused on delivering custom OEM and ODM solutions that move projects from initial图纸 (technical drawing) to full mass production seamlessly. This guide breaks down our end-to-end service process, core technical capabilities, and quality assurance frameworks to help global clients understand how a one-stop LSR manufacturing partner can simplify product development and reduce go-to-market risk.

Phase 1: Pre-Development Technical Consultation and Design Validation

Before any tooling or prototyping work begins, the pre-development phase lays the foundation for a successful mass production project. Many common LSR manufacturing issues—such as incomplete molding, flash, poor dimensional tolerance, or material incompatibility—can be traced back to gaps in initial design review. Our one-stop service starts with collaborative technical consultation to align on product requirements and optimize designs for LSR molding.

Material Selection and Application-Specific Validation

Not all liquid silicone rubber is formulated equally, and choosing the right material grade is critical to meeting performance, regulatory, and cost requirements. We support clients in evaluating material options based on end-use application, with standardized formulations and custom blends available to match specific needs. The table below outlines common material grades we use for different OEM/ODM projects:

ApplicationKey Required PropertiesTypical LSR Hardness Range (Shore A)Regulatory Compliance Notes

Medical devices (invasive)Biocompatibility, low leachables20–70Meets ISO 10993 standards

Baby products (nipples, pacifiers)Non-toxic, tear resistance, high transparency30–50Compliant with food contact standards (FDA 21 CFR, EU 1935/2004)

Automotive seals/gasketsOil resistance, high temperature stability50–80Resistant to continuous exposure to -40°C to 200°C

Consumer electronics keypadsCompression set resistance, tactile feel20–40Resistant to UV and repeated mechanical stress

Industrial waterproof sealsChemical resistance, tight tolerance40–70Low water absorption (<0.01% by weight)

Our engineering team reviews material requirements alongside client design files to ensure the selected grade meets all functional specifications. For clients with unique performance needs (e.g., conductive LSR for smart wearables, self-lubricating LSR for industrial components), we can work with custom formulated materials to match specific project requirements, without requiring clients to source raw materials independently.

Design for Manufacturability (DFM) Review for LSR Molding

LSR injection molding has specific design constraints that differ from thermoplastic molding, and an optimized design reduces the risk of tooling rework and production delays. Our free DFM review as part of the one-stop service covers four core evaluation areas:

Wall thickness consistency: Uniform wall thickness between 1.0mm and 6.0mm is ideal for LSR molding. We flag inconsistent thickness that can cause sink marks or incomplete curing, and recommend adjustments to maintain structural integrity while reducing material waste.
Draft angles: LSR requires gentle draft angles to avoid damaging parts during demolding. For most parts, we recommend a minimum 0.5° draft for internal surfaces and 0.25° for external surfaces. We adjust designs to meet this requirement where needed.
Undercuts and complex geometry: LSR can accommodate intricate undercuts and overmolding, but we evaluate whether undercuts can be accommodated with standard tooling action to avoid unnecessary tooling cost increases.
Tolerance alignment: We clarify achievable tolerance ranges based on part size and molding process to avoid unrealistic design requirements that would raise production costs without adding functional value. Typical achievable tolerances for LSR parts are outlined in the table below:

Part Dimension (mm)Typical Tolerance (mm)Tight Tolerance Option (mm, additional cost)

<50±0.10±0.05

50–150±0.20±0.10

150–300±0.35±0.15

>300±0.50±0.25

After completing the DFM review, we provide a detailed report with design adjustment recommendations, a preliminary quote, and a projected timeline for prototyping and production, so clients have full transparency before committing to any project work.

Phase 2: Prototyping and Tooling Development

Once the design is finalized, the next phase of our one-stop service moves to prototyping and custom tooling manufacturing. Unlike many LSR manufacturers that outsource tooling production, we manage the entire tooling process in-house to maintain control over quality and delivery timelines.

Rapid Prototyping for LSR Parts

Prototyping is a critical step to validate form, fit, and function before investing in mass production tooling. We offer two prototyping options to match client project timelines and budget requirements:

3D printed LSR prototype: For fast form and fit validation, we use 3D printed liquid silicone to produce prototypes in 3–5 business days. This option is ideal for early-stage product development, allowing clients to test ergonomics and assembly fit without high upfront costs. 3D printed LSR prototypes have similar material properties to molded LSR for basic functional testing, though they are not suitable for long-term performance testing.
Prototype injection molding: For functional performance testing, we produce low-cost aluminum prototype molds to injection mold parts with the same production-grade LSR material that will be used in mass production. This delivers prototypes that match the final part’s material properties and dimensional accuracy, with a typical lead time of 7–10 business days, and can support runs of 10–100 prototype parts for testing and validation.

After prototypes are completed, we share dimensional inspection reports and photos with clients for approval, and incorporate any design changes before moving to final mass production tooling.

Custom LSR Injection Molding Tooling Manufacturing

Tooling quality directly determines the consistency and quality of mass-produced LSR parts, so we prioritize precision manufacturing and rigorous testing for all custom tools. All tooling is manufactured in-house using high-quality mold steel (P20, S136, H13 based on projected production volume) to ensure long tool life:

For low-volume projects (<100,000 parts): We use P20 steel for a balance of cost and durability
For medium to high-volume projects (>100,000 parts): We use hardened S136 or H13 steel for extended tool life, with expected tool life of 1,000,000+ shots
For overmolding and insert molding projects: We design custom multi-cavity tools with integrated locating pins for accurate insert placement

After tooling manufacturing is complete, we conduct a full trial run to produce 20–50 sample parts, which we inspect for dimensional accuracy, surface finish, flash, and curing consistency. We share sample parts and a full first inspection report (FAIR) with clients for formal approval before mass production begins. All tooling is owned by the client, and we store tooling in our dedicated on-site tooling warehouse at no additional cost for repeat orders.

Phase 3: Mass Production and In-Process Quality Assurance

Once tooling and samples are approved, we move to full mass production, leveraging our ISO 9001 certified quality management system to deliver consistent, specification-compliant LSR parts for every order. As a specialized LSR manufacturer, our production lines are dedicated exclusively to liquid silicone rubber injection molding, allowing us to optimize processes for LSR’s unique curing and molding requirements.

Core Production Capabilities for OEM/ODM Projects

We support a full range of LSR production processes to meet different product design requirements, including:

Standard LSR injection molding: For standalone solid LSR parts, ranging in size from small 1g components to large 5kg finished parts. We operate 12 injection molding machines with clamping forces ranging from 50 tons to 500 tons, supporting single-cavity and multi-cavity tooling for low-volume (100 parts) to high-volume (1,000,000+ parts) orders.
LSR overmolding: For projects that require bonding LSR to thermoplastics, metal, or other substrates (e.g., soft-grip tool handles, waterproof seals for electronics housings, medical device handles). We use two methods to achieve strong, durable bonds: material-formulated adhesion for compatible substrates, and surface treatment (plasma etching, primer application) for difficult-to-bond materials.
Insert molding: For projects that integrate metal or plastic inserts into LSR parts (e.g., threaded inserts for sealing gaskets, reinforced handles for baby products). Our automated insert loading systems ensure consistent, accurate placement of inserts to reduce defects and improve production efficiency.

The table below outlines our typical lead times for mass production based on order size, to help clients plan their go-to-market timelines:

Order Quantity (Parts)Typical Production Lead Time (After Sample Approval)

100–5,0007–10 working days

5,000–50,00010–15 working days

50,000–200,00015–25 working days

>200,00025–35 working days (scheduled in continuous production batches)

ISO 9001 Aligned Quality Control Processes

At 橡楚（湖北）橡胶有限公司, all production follows our ISO 9001 certified quality management system, with in-process and final inspection checks at every stage of production to ensure compliance with client specifications:

Incoming raw material inspection: Every batch of LSR raw material is tested for hardness, viscosity, and purity before entering production, with certificates of analysis retained for all batches. We only source raw material from established global silicone suppliers to ensure consistent quality.
In-process inspection: Every 2 hours during production, our quality control team pulls 5 parts from the production run to check dimensional tolerance, surface finish, and curing quality. Process parameters (injection pressure, mold temperature, curing time) are logged digitally for every production run to ensure traceability.
Final pre-shipment inspection: Before packaging and shipping, 100% of parts are visually inspected for defects (flash, bubbles, cracks, incomplete curing), and a statistical sample is tested for dimensional accuracy and material properties per AQL (Acceptable Quality Level) standards agreed with the client. We provide a full inspection report with every shipment, including dimensional data, material test results, and lot traceability information.

For clients requiring additional third-party testing (e.g., food contact safety testing, biocompatibility testing), we can coordinate testing through accredited third-party laboratories at the client’s request, to meet regional regulatory requirements.

Post-Production Support and Supply Chain Management

Our one-stop service does not end when production is complete. We offer end-to-end post-production support to simplify supply chain management for our global clients, eliminating the need to coordinate with additional vendors for secondary operations or logistics.

Secondary Operations and Custom Packaging

We handle all common secondary operations in-house, to reduce transit time and avoid misalignment between production and post-processing:

Deflashing and trimming: Automated and manual trimming to remove excess flash, with strict tolerances for edge finish to meet aesthetic and functional requirements
Cutting and drilling: Precision secondary machining for holes, slots, or other features that cannot be molded directly
Printing and laser engraving: Pad printing, screen printing, and laser engraving for branding, part numbers, or functional markings
Assembly: Partial or full assembly of LSR parts with other components (e.g., seals with housings, pacifiers with shields) to deliver finished ready-to-sell products directly to clients
Custom packaging: We offer custom packaging options to match client brand requirements, from bulk industrial packaging to retail-ready packaging that can be shipped directly to distribution centers.

Ongoing Support for Repeat Orders and Product Iteration

We store all client tooling in our secure, climate-controlled on-site warehouse at our facility in 湖北省鄂州市鄂城区经济开发区凡口街道内河巷54号, at no additional cost for active clients. For repeat orders, we can schedule production within 5–7 working days after receiving your order, eliminating the need to re-manufacture tooling for every run.

For clients looking to iterate on existing products (e.g., design adjustments for new product versions, material grade changes), our engineering team provides rapid re-evaluation and DFM review to minimize downtime and cost for product updates. We maintain full design and production records for all client projects, so we can quickly access historical data for existing products to speed up iteration and reorder processes.

For any questions or support, clients can reach our global sales and technical team directly at phone: +86 18071171144 or email: churubber@163.com, with typical response times within 24 business hours for all inquiries.

Conclusion

Bringing a custom LSR product from initial technical drawing to mass production does not need to be a fragmented, high-risk process. A one-stop OEM/ODM service model that combines technical consultation, design validation, in-house tooling, controlled mass production, and end-to-end support eliminates the friction of coordinating multiple vendors, reduces production costs, and shortens go-to-market timelines.

At 橡楚（湖北）橡胶有限公司, our core focus is on specialized, high-quality LSR manufacturing, backed by our ISO 9001 certification and decades of combined engineering experience in LSR injection molding. Our new export website is designed to make our one-stop services more accessible to global clients, with clear technical resources, service information, and direct contact access to our engineering and sales teams. Whether you are an early-stage startup with a new product concept or an established brand looking to outsource LSR production to a reliable, specialized partner, we can support your project from图纸 to full mass production, with full transparency and consistent quality at every step.

We invite you to explore our new website, share your project requirements with our team, and experience the benefits of working with a dedicated one-stop LSR manufacturing partner.

One-stop LSR OEM ODM Service Guide