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Precision LSR Silicone Manufacturing

Over 20 years of expertise in liquid silicone rubber injection molding, medical-grade components, optical lenses, and custom silicone valves. ISO13485 certified with in-house mold design and rapid prototyping.

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Trusted Silicone Solutions Since 2003

YEJIA Silicone is a reputable manufacturer based in Dongguan, China, with over two decades of experience in liquid silicone rubber (LSR) injection molding and precision silicone component manufacturing. We specialize in high-performance silicone products for medical, automotive, electronics, food & beverage, and household goods industries.

Our 10,000+ square meter facility includes dedicated cleanrooms for medical silicone molding (ISO13485 certified) and advanced optical lens production. With an in-house mold-making department, we deliver prototypes in just 7–10 days and ensure full control over quality and timelines.

20+
Years Experience
10K+
m² Facility
7-10
Day Prototypes
ISO
13485 Certified
YEJIA Manufacturing Facility

Industry Applications

Medical Devices

Bio-compatible silicone components including valves, seals, balloons, and drug delivery systems manufactured in ISO13485 cleanroom environment.

Automotive

High-temperature resistant silicone parts for engine systems, fluid control, sensors, and HVAC applications with long-term durability.

Electronics

Silicone overmolding, seals, and protective components for consumer electronics, wearables, and industrial devices.

Food & Beverage

FDA-compliant silicone valves, dispensers, and sealing components for safe use in food processing and packaging equipment.

Household Goods

Durable silicone parts for kitchen appliances, cleaning tools, personal care devices, and home automation systems.

Industrial

Custom silicone solutions for fluid control, sealing, and insulation in demanding industrial environments.

Premium Silicone Products

Silicone Valves

Silicone Valves

Precision-engineered elastomeric valves for fluid and air control in medical, automotive, and industrial applications.

Silicone Lenses

Silicone Lenses

Optical silicone lenses and light guides produced via LSR molding for LED, medical, and sensor applications.

Medical Silicone Products

Medical Components

ISO13485-certified production of bio-compatible silicone parts including balloons, seals, and drug delivery valves.

Flip Top Cap

Flip Top Caps

Custom 38 400 flip top closures and dispensing caps with integrated silicone valves for liquid control.

Duckbill Valves

One-directional flow control valves ideal for medical devices, ventilators, and fluid dispensing systems.

Silicone Overmolding

Two-shot molding process combining silicone with plastic or metal substrates for enhanced functionality.

Compression Molding

High-volume production of complex silicone parts using compression and overmolding techniques.

Light Guide Lenses

Custom optical silicone light guides for uniform illumination in medical, automotive, and consumer devices.

Custom NBR Valves

Oil-resistant rubber valves for harsh environments requiring durability and chemical resistance.

Recyclable TPE Valves

Environmentally friendly thermoplastic elastomer valves designed for sustainability-focused applications.

Silicone Face Masks

Comfortable, hypoallergenic silicone face mask components for respiratory and medical devices.

Hemostatic Valves

Medical-grade silicone hemostatic valves for catheters and minimally invasive surgical instruments.

Why Choose YEJIA Silicone?

ISO13485 Certified

Our 100,000-class cleanroom ensures medical-grade production with full traceability and compliance.

Rapid Prototyping

In-house mold design and fabrication enable prototype delivery in just 7–10 days.

Full-Service Manufacturing

From design to assembly — we handle mold making, LSR molding, testing, and packaging.

Material Expertise

We work with medical-grade, food-safe, high-temp, and conductive silicones tailored to your needs.

Global Supply

Trusted by clients worldwide with reliable logistics and on-time delivery performance.

Engineering Support

Our technical team provides DFM analysis, material selection, and design optimization.

Frequently Asked Questions

What is Liquid Silicone Rubber (LSR) molding?

LSR molding is a precision injection process using two-part platinum-cured silicone that offers excellent thermal stability, biocompatibility, and durability. It's ideal for high-volume, tight-tolerance parts in medical and automotive industries.

Are your silicone products FDA and ISO compliant?

Yes. Our medical silicone products are manufactured in an ISO13485-certified cleanroom. We use FDA-compliant materials for food and beverage applications and provide full documentation upon request.

How long does it take to receive a prototype?

With our in-house mold-making capability, we can deliver functional LSR prototypes within 7 to 10 business days after design approval.

Can you overmold silicone onto plastic or metal parts?

Yes. We specialize in silicone overmolding and two-shot molding processes, bonding liquid silicone rubber to various substrates including thermoplastics and metals for enhanced functionality.

Do you offer custom valve design services?

Absolutely. Our engineering team supports custom valve development from concept to production, including flow testing, material selection, and mold design for cross-slit, duckbill, umbrella, and one-way valves.

Get in Touch

Ready to start your next silicone project? Contact our engineering team for technical support, quotes, or samples.

Contact Information

  • Yejia Optical Technology (Guangdong) Corporation
  • No. 2, Longpu Road, Longbeiling Village, Tangxia Town, Dongguan City, Guangdong Province, PRC
  • +86 769 8177 5079
  • +86 151 1847 9234
  • rosie@yjoptics.com
  • 008615118479234

Visit Our Website

For detailed product specifications, technical documents, and video demonstrations, please visit the official YEJIA Silicone website.

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We respond to all inquiries within 24 business hours.

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