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Precision LSR Molding Solutions

Shanghai Acai Mold Co., Ltd specializes in liquid silicone rubber (LSR) injection molding tooling design and in-house manufacturing. Delivering professional services and innovative solutions for global industries.

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LSR Molding Process

About Acai LSR

Acai (Shanghai) specializes in liquid silicone rubber (LSR) for injection molding tooling design and in-house tooling manufacturing. As a professional services and solutions provider, we are committed to delivering high-precision, reliable, and cost-effective mold solutions tailored to the needs of diverse industries.

With years of expertise in LSR technology, our team combines advanced engineering with hands-on manufacturing excellence to ensure every project meets the highest standards of quality and performance.

In-House Manufacturing

R&D Innovation

Our Core Capabilities

  • Design & Engineering: Advanced CAD/CAM systems for precision mold design.
  • R&D: Continuous innovation in LSR processing and material compatibility.
  • Manufacturing: Full in-house CNC, EDM, and polishing capabilities.
  • Quality Control: ISO-compliant inspection and testing protocols.
  • Global Support: Serving clients across Asia, Europe, and North America.

Our Product Range

High-precision LSR molds and components engineered for performance, durability, and repeatability.

Medical Grade LSR Molds

ISO 13485 compliant molds for syringe components, seals, and implants.

  • Biocompatible materials
  • Cleanroom production
  • FDA/CE ready

Automotive Seals & Gaskets

High-temp resistant LSR components for engine and electrical systems.

  • -50°C to 200°C range
  • Fuel/oil resistance
  • IP68 sealing

Consumer Electronics Seals

Precision gaskets for smartphones, wearables, and IoT devices.

  • Ultra-thin profiles
  • EMI shielding options
  • High cycle life

Appliance Components

Durable LSR parts for kitchen, laundry, and HVAC systems.

  • Dishwasher safe
  • NSF certified options
  • Color stability

Pharmaceutical Packaging

Closures, septa, and pump components for drug delivery.

  • Low extractables
  • Sterilization compatible
  • Tamper-evident designs

Baby Care Products

Bottle nipples, pacifiers, and feeding accessories.

  • BPA-free
  • Dishwasher safe
  • ASTM F963 compliant

Industrial Sealing Systems

Custom gaskets and seals for heavy machinery and equipment.

  • High pressure rated
  • Abrasion resistant
  • Long service life

Wearable Health Devices

Skin-contact seals for monitors, sensors, and diagnostic tools.

  • Hypoallergenic
  • Sweat resistant
  • Flexible adhesion

Our Solutions

From concept to production, we deliver comprehensive LSR molding solutions tailored to your industry needs.

Mold Solutions

  • 2K/3K Multi-component Molds: Complex overmolding with different durometers or colors.
  • Hot Runner Systems: Valve-gated and open-nozzle designs for optimal flow control.
  • Micro Molding: Sub-gram precision for ultra-small medical and electronic components.
  • Insert Molding: Overmolding metal or plastic inserts with LSR for hybrid parts.
  • Prototype to Production: Seamless transition from rapid tooling to mass production.

Molding Solutions

  • Process Optimization: Scientific molding with DOE and SPC for consistent quality.
  • Material Selection: Guidance on hardness, color, and specialty grades (platinum cure, fluorosilicone).
  • Automation Integration: Robotic demolding and inline inspection systems.
  • Validation Support: IQ/OQ/PQ documentation and process validation.
  • Supply Chain Management: JIT delivery and inventory management for production continuity.

Why Choose Acai LSR?

Our combination of technical expertise, advanced equipment, and customer-centric approach sets us apart.

In-House Manufacturing

Full control from design to delivery with 3,000㎡ facility in Shanghai.

R&D Innovation

Dedicated team focused on new materials, processes, and mold technologies.

Quality Assurance

ISO standards, CMM inspection, and rigorous testing protocols.

Global Support

Serving clients in 15+ countries with multilingual engineering support.

15+
Years Experience
3,000+
Molds Delivered
15
Countries Served
99.8%
On-Time Delivery

Frequently Asked Questions

Get answers to common questions about our LSR molding services.

What is Liquid Silicone Rubber (LSR)?

Liquid Silicone Rubber (LSR) is a two-part platinum-cured silicone that is injected into molds under high pressure. It offers excellent thermal stability, chemical resistance, and biocompatibility, making it ideal for medical, automotive, and consumer applications.

What industries do you serve?

We serve medical device manufacturers, automotive suppliers, consumer electronics brands, pharmaceutical companies, baby product developers, and industrial equipment makers.

What is your typical lead time?

Standard mold lead time is 4-6 weeks depending on complexity. Prototypes can be delivered in 2-3 weeks. Production molding timelines vary based on volume and part complexity.

Do you offer design for manufacturability (DFM) review?

Yes, we provide comprehensive DFM analysis including mold flow simulation, gate location optimization, shrinkage prediction, and material selection guidance—all at no additional cost.

Can you handle small batch and prototype production?

Absolutely. We specialize in low-volume production and rapid prototyping using aluminum molds and accelerated processing cycles to get your parts faster and more affordably.

Get in Touch

Ready to start your next LSR molding project? Contact our engineering team today.

+86 21 67675651
acai@acai-lsr.com
No.499, Xutang Road, Songjiang District, Shanghai City, China
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