Custom Medical Silicone Products: The Complete OEM/ODM Process From Concept To Delivery

You have a medical device concept — or an existing product that needs a better silicone component. You know you need a manufacturer in China who can bring it to life. But the OEM/ODM process for medical-grade silicone is not the same as ordering off-the-shelf industrial parts. It involves material science, regulatory compliance, precision tooling, and a structured validation process that, if done right, protects both your product and your patients.

The good news: with the right manufacturing partner, the process is straightforward, well-documented, and designed to get you from concept to compliant, production-ready product as efficiently as possible.

This guide walks you through every stage of the custom medical silicone OEM/ODM process — what happens, what you need to provide, what to expect, and how to avoid the most common pitfalls.

OEM vs. ODM: Understanding the Difference

Before diving into the process, it is worth clarifying two terms that are often used interchangeably but mean different things:

At Chensheng Medical, we support both models — and in practice, most projects fall somewhere in between: buyers come with a concept or reference product, and our engineering team collaborates to refine the design for manufacturability, performance, and regulatory compliance.

The 7-Stage OEM/ODM Process: An Overview

Stage 1:InitialConsultation&RequirementsDefinition↓Stage 2:MaterialSelection&EngineeringReview↓Stage 3:ToolingDesign&Fabrication↓Stage 4:PrototypeProduction&SampleEvaluation↓Stage 5:ValidationTesting&RegulatoryDocumentation↓Stage 6:ProductionApproval&Scale-Up↓Stage 7:OngoingProduction,QualityControl&Supply

Each stage has defined inputs, outputs, and decision points. Let us walk through each one in detail.

Stage 1: Initial Consultation & Requirements Definition

What Happens

Every successful custom silicone project begins with a thorough requirements definition. This is not just a sales conversation — it is a technical discovery process that determines every downstream decision, from material selection to tooling design to regulatory documentation.

What You Need to Provide

The more information you can share at this stage, the faster and more accurately we can develop your product. Useful inputs include:

Product definition:

• Product name and intended use (e.g., "single-use peristaltic pump tubing for IV drug delivery")

• Reference product or competitor sample (if available)

• Technical drawings (PDF, DWG, STEP, or other CAD formats — or hand sketches if drawings are not yet available)

• Critical dimensions and tolerances

Application requirements:

• What fluids, gases, or tissues will the silicone contact?

• Contact duration (limited <24h / prolonged 24h–30 days / permanent >30 days)?

• Operating temperature range

• Pressure requirements (for tubing and seals)

• Sterilization method(s) required (autoclave / EtO / gamma / none)

• Number of use cycles (single-use or reusable?)

Regulatory and market requirements:

• Target markets (US / EU / China / other)

• Device classification (Class I / II / III or equivalent)

• Certifications required (FDA, CE, NMPA, or others)

• Biocompatibility documentation needed for your submission

Commercial requirements:

• Estimated annual volume

• Target unit cost (if known)

• Required lead time for first production order

• Packaging and labeling requirements (including private label / OEM branding)

What We Provide

Within 3–5 business days of receiving your requirements, our team will provide:

• Initial feasibility assessment — is the product manufacturable as specified?

• Preliminary material recommendation (curing system, hardness, special properties)

• Indicative tooling cost and lead time

• Indicative unit pricing at your target volume

• Any design-for-manufacturability (DFM) suggestions

No drawings? No problem. If you do not have technical drawings, our engineering team can work from a physical sample, a sketch, or a detailed written description. We will produce a drawing for your review and approval before any tooling is initiated.

Stage 2: Material Selection & Engineering Review

Selecting the Right Silicone Compound

Material selection for medical silicone is not a one-size-fits-all decision. The optimal compound depends on the intersection of your application requirements, regulatory needs, and performance targets.

Our standard approach for medical applications:

Curing system: Platinum-cured addition cure for all patient-contact and fluid-contact applications — no exceptions. For non-contact structural components, peroxide-cured may be considered on a case-by-case basis. For a full explanation of why this matters, see: Platinum-Cured vs. Peroxide-Cured Silicone: Which Should You Choose?

Hardness (Shore A): Selected based on application:

Special properties (where required):

• Radiopaque — barium sulfate or bismuth subcarbonate filled, for X-ray visibility

• Antimicrobial — silver ion or other antimicrobial agent incorporation

• Colored / color-coded — FDA-compliant pigments for size or product identification

• High-clarity — optimized platinum-cured formulation for maximum optical transparency

• Conductive — carbon black or metal-filled for electrosurgical or grounding applications

• Flame retardant — for non-implantable device components requiring UL or IEC compliance

Engineering Review and DFM

Before tooling is initiated, our engineering team conducts a formal Design for Manufacturability (DFM) review. This review identifies:

• Wall thickness issues — sections too thin to fill consistently, or too thick causing sink marks

• Draft angle requirements for molded parts — to ensure clean demolding

• Tolerance achievability — flagging dimensions that require special process controls

• Parting line placement — optimizing cosmetic appearance and dimensional accuracy

• Gate location for injection-molded parts — minimizing weld lines and flow marks

DFM feedback is provided in writing with annotated drawings. Any design modifications are agreed with you before tooling begins.

Stage 3: Tooling Design & Fabrication

Types of Tooling Used in Medical Silicone Manufacturing

For tubing products (including medical silicone tubing, peristaltic pump tubing, and catheter shafts), extrusion tooling is used — meaning no cavity mold is required, significantly reducing tooling cost and lead time.

Tooling Lead Times

Tooling Ownership

Your tooling is your asset. All custom tooling fabricated for your project is:

• Invoiced separately from unit product cost (one-time tooling fee)

• Permanently assigned to your account — never used for other customers

• Stored and maintained at our facility at no ongoing charge

• Transferable to another manufacturer if you choose to move production (subject to outstanding invoice settlement)

Tooling ownership terms are documented in the project agreement before any work begins.

Stage 4: Prototype Production & Sample Evaluation

First Article Samples (T1 Samples)

Once tooling is complete, we produce the first article samples — typically 20–50 pieces from the initial tool run. These samples are:

• Dimensionally inspected against your drawing (100% critical dimensions measured and reported)

• Visually inspected for surface finish, flash, and cosmetic defects

• Accompanied by a First Article Inspection Report (FAIR) documenting all measured values

T1 samples are shipped to you by international express courier for your evaluation.

Your Evaluation Protocol

We recommend evaluating T1 samples against the following criteria:

Dimensional verification:

• Measure all critical dimensions with calibrated instruments

• Verify tolerances are met across the full sample set (not just average values)

Functional testing:

• Install the component in your device or test fixture

• Verify fit, form, and function under actual operating conditions

• For tubing: verify flow rate, pressure drop, and kink resistance

• For seals and gaskets: verify sealing performance at rated pressure

Material property verification:

• Shore A hardness (compare to specification)

• Tensile strength and elongation (if critical to your application)

• Compression set (critical for pump tubing and sealing applications)

Sterilization compatibility:

• Run samples through your actual sterilization protocol

• Re-measure critical dimensions and mechanical properties post-sterilization

• Verify no discoloration, surface degradation, or dimensional change

Sample Iteration

If T1 samples require modifications — dimensional adjustments, hardness changes, surface finish improvements — we implement the changes and produce T2 samples. Most projects are approved within 1–2 sample iterations. Complex projects may require 3 iterations.

Each iteration is documented with updated drawings and inspection reports, creating a clear audit trail for your design history file (DHF).

Stage 5: Validation Testing & Regulatory Documentation

Why This Stage Cannot Be Skipped

For regulated medical devices, sample approval is necessary but not sufficient. Before a silicone component can be used in a device that will be submitted for FDA 510(k), CE marking, or NMPA registration, the material must be supported by appropriate biocompatibility and performance validation data.

This is where many OEM projects stall — buyers discover late in the process that their supplier cannot provide the documentation needed for their regulatory submission. At Chensheng Medical, we address this proactively at Stage 1.

Biocompatibility Documentation Package

For medical-grade applications, we provide the following documentation as standard:

For applications requiring additional endpoints:

For a detailed explanation of what each certification covers and which ones your application requires, see: USP Class VI, ISO 10993, and FDA 21 CFR 177.2600: Which Medical Silicone Certification Do You Actually Need?

Process Validation

For custom products, we conduct process validation to demonstrate that our manufacturing process consistently produces product meeting your specification. This includes:

• Installation Qualification (IQ): Equipment and tooling are installed and calibrated correctly

• Operational Qualification (OQ): Process parameters produce conforming product across the operating range

• Performance Qualification (PQ): Three consecutive production runs demonstrate consistent output

Process validation records are maintained in our quality management system and are available for customer audit.

Stage 6: Production Approval & Scale-Up

Golden Sample and Limit Samples

Before production approval, we establish:

• Golden sample: A reference sample representing the approved product standard — retained at our facility and used as a visual and dimensional benchmark for all future production

• Limit samples (where applicable): Samples representing the acceptable upper and lower limits of cosmetic variation, agreed with you in advance

These samples eliminate subjectivity in production inspection and provide an objective standard for acceptance/rejection decisions.

Production Approval Documentation

Production approval is formalized through a Production Part Approval Process (PPAP)-style package, which includes:

• Approved drawing (revision-controlled)

• Approved material specification

• First Article Inspection Report (approved)

• Process parameters (locked Bill of Materials and Process Specification)

• Approved biocompatibility documentation package

• Golden sample (retained)

Once production approval is granted, no changes to material, process, or tooling are made without your prior written approval — this is our change control commitment.

Scale-Up and Capacity Planning

For high-volume production, we work with you to:

• Plan production scheduling to meet your delivery requirements

• Establish safety stock levels for critical components

• Define reorder triggers and lead time expectations

• Agree on lot size and inspection frequency for ongoing production

Stage 7: Ongoing Production, Quality Control & Supply

Every Production Lot

For every production lot of your custom product, we perform:

In-process inspection:

• Dimensional checks at defined intervals during production

• Visual inspection for surface defects, flash, and contamination

• Shore A hardness verification

Final inspection:

• AQL sampling per your agreed acceptance criteria (typically AQL 1.0 or 2.5)

• 100% visual inspection for critical defects

• Dimensional measurement of critical dimensions

Pre-shipment documentation:

• Lot-specific Certificate of Analysis (CoA) with actual measured values

• Packing list with lot number and quantity

• Any additional documents required by your QMS (e.g., Declaration of Conformity)

Traceability

Every production lot is fully traceable from raw material batch to finished product shipment. In the event of a quality issue or regulatory inquiry, we can provide:

• Raw material batch records (compound lot number, supplier CoA)

• Production batch records (process parameters, operator records, equipment IDs)

• In-process and final inspection records

• Shipping records (lot number, quantity, destination, date)

This traceability system is maintained under our ISO 13485 quality management system and is available for customer audit at any time.

Change Control

Any change to your product — material, process, tooling, or packaging — follows our formal change control procedure:

1. Change request initiated (internally or by customer)

2. Impact assessment — effect on dimensions, performance, biocompatibility, regulatory status

3. Customer notification and approval (for changes affecting form, fit, function, or regulatory documentation)

4. Validation of change (re-sampling, re-testing as required)

5. Documentation update (drawing revision, updated CoA, updated regulatory documents)

6. Implementation with clear lot demarcation

You will never receive a changed product without advance notice and your explicit approval.

Typical Project Timeline

Typical total timeline from first inquiry to first production shipment:

• Simple extrusion product (tubing, profile): 6–10 weeks

• Molded component (compression or transfer mold): 8–14 weeks

• Complex LSR injection-molded part: 12–20 weeks

These timelines assume prompt customer feedback at each stage. Delays in drawing approval, sample evaluation, or regulatory documentation are the most common causes of project timeline extension.

What Makes a Successful OEM Partnership: Lessons From 40 Years

After four decades of custom medical silicone manufacturing, we have observed that the most successful OEM projects share several characteristics:

Clear requirements from the startProjects that begin with well-defined specifications — even if not yet in drawing format — move faster and require fewer sample iterations. Invest time in Stage 1 to save time in Stages 4 and 5.

Early regulatory planningBuyers who identify their regulatory submission requirements at the start of the project avoid the costly and time-consuming discovery that their supplier cannot provide the documentation they need. Ask for the full documentation package at Stage 1, not after sample approval.

Realistic tolerance expectationsMedical silicone is a precision material, but it is not metal. Tolerances tighter than ±0.05mm on tubing dimensions or ±0.1mm on molded part dimensions typically require special process controls and carry cost implications. Our engineering team will advise on achievable tolerances for your specific geometry.

Collaborative design reviewBuyers who engage with our DFM feedback — rather than insisting on unchanged designs — consistently get better products at lower cost. DFM suggestions are not about cutting corners; they are about making your design work better in silicone.

Long-term supply commitmentCustom tooling represents a significant investment by both parties. Projects with a clear long-term supply commitment allow us to optimize production scheduling, maintain dedicated tooling, and offer the most competitive pricing.

For guidance on evaluating whether a manufacturer is the right long-term partner for your OEM project, see: How to Choose a Reliable Medical Silicone Manufacturer in China

Chensheng Medical OEM Capabilities at a Glance

Our custom OEM product experience spans the full range of medical silicone applications:

• Medical Silicone Tubing — custom ID/OD/wall, custom hardness, custom length

• Silicone Foley Catheters — 2-way and 3-way, custom French sizes

• Breathing & Anesthesia Circuits — custom configurations, adult/pediatric/neonatal

• Closed Wound Drainage Systems — custom reservoir volumes and drain configurations

• Silicone seals, gaskets, and custom molded components for medical devices

Frequently Asked Questions (FAQ)

Q1: I don't have technical drawings yet. Can I still start the OEM process?

A: Yes. Many of our OEM projects begin without formal drawings. You can start with a physical sample of an existing product, a sketch with key dimensions, or a written description of your requirements. Our engineering team will produce a formal drawing for your review and approval before any tooling is initiated. The drawing becomes the controlled reference document for all subsequent production.

Q2: Who owns the tooling after it is made?

A: You do. All custom tooling fabricated for your project is invoiced as a one-time tooling fee and becomes your property. It is stored and maintained at our facility at no ongoing charge and is permanently dedicated to your account. If you ever wish to transfer production to another manufacturer, the tooling can be shipped to them (subject to settlement of any outstanding invoices).

Q3: What is the typical tooling cost for a custom medical silicone product?

A: Tooling cost depends on the manufacturing process and complexity. As a general guide: extrusion dies typically range from $200–$800; simple compression molds from $500–$2,000; multi-cavity LSR injection molds from $3,000–$15,000+. We provide a firm tooling quotation before any work begins. For tubing products, no cavity tooling is required — only an extrusion die — which significantly reduces upfront investment.

Q4: Can you match an existing competitor product exactly?

A: In most cases, yes. If you provide a physical sample of the product you want to replicate or replace, our engineering team will reverse-engineer the key dimensions and material properties and produce a matched specification. Note that we cannot replicate proprietary formulations or patented designs, but we can match performance characteristics and dimensions to your requirements.

Q5: How do you handle confidentiality for OEM projects?

A: We sign a mutual Non-Disclosure Agreement (NDA) before any confidential technical information is shared. Customer drawings, specifications, and product information are treated as strictly confidential and are never shared with third parties or used for any purpose other than fulfilling your order. Material composition disclosures from our side are also provided under NDA.

Q6: Can you provide private label packaging with our brand name and logo?

A: Yes. We offer full private label services including custom printed packaging, custom labeling with your brand name, logo, product codes, and regulatory markings. We can also produce IFU (Instructions for Use) inserts to your specification. Artwork files should be provided in AI, PDF, or CDR format.

Q7: What happens if a production lot does not meet specification?

A: Any non-conforming lot is quarantined and not shipped. You will be notified immediately with a non-conformance report. We will conduct a root cause analysis and implement corrective action before releasing replacement product. If a non-conforming lot has already been shipped, we follow our formal CAPA procedure under ISO 13485 — including root cause analysis, corrective action, and replacement or credit as appropriate.

Q8: Can you support regulatory submissions for our device in the US, EU, or China?

A: We provide the material-level documentation package that supports your device-level regulatory submission — including ISO 10993 biocompatibility reports, USP Class VI reports, ISO 13485 certificate, and FDA registration documentation. We do not act as a regulatory consultant for device-level submissions, but we work closely with your regulatory affairs team or third-party consultants to ensure our documentation meets your submission requirements. For a detailed overview of what documentation is available, see: USP Class VI, ISO 10993, and FDA 21 CFR 177.2600: Which Medical Silicone Certification Do You Actually Need?

Start Your Custom Medical Silicone Project Today

Whether you are at the concept stage, have detailed drawings ready, or need to replace an existing component with a better-qualified alternative, our OEM team is ready to move quickly.

Getting started is simple:

1. Send us your requirements — drawings, samples, or a written description

2. Receive a feasibility assessment and quotation within 3–5 business days

3. Approve samples — typically within 6–10 weeks for extrusion products

4. Start production — with full regulatory documentation included

What you get from Day 1:

• Dedicated English-speaking project manager

• Engineering team with 40+ years of medical silicone expertise

• Full regulatory documentation package included as standard

• Customer-owned tooling with no ongoing storage fees

• ISO 13485-certified quality system with full lot traceability

→ Submit Your OEM Requirements→ Request a Project Consultation Call→ Explore Our Medical Silicone Product Range

Related Articles:

• How to Choose a Reliable Medical Silicone Manufacturer in China

• Platinum-Cured vs. Peroxide-Cured Silicone: Which Should You Choose?

• USP Class VI, ISO 10993, and FDA 21 CFR 177.2600: Which Medical Silicone Certification Do You Actually Need?

• How to Choose Medical Grade Silicone Tubing: A Practical Guide for Healthcare Buyers

• Peristaltic Pump Tubing Selection: Material Properties and Performance Factors

• Medical-Grade Silicone Tubing for Respiratory Circuits: Compliance Requirements