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Precision LSR Injection Molding Manufacturer | Custom Liquid Silicone Rubber Components

High-precision LSR injection molding with superior thermal, chemical, and mechanical performance. OEM production for medical, baby, automotive, and consumer-grade silicone components.

Custom Liquid Silicone Rubber Injection Molding with Superior Precision and Performance

We offer advanced LSR molding solutions for industries requiring biocompatibility, heat resistance, and exceptional dimensional accuracy.

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Explore LSR Applications
Biocompatible liquid silicone rubber valve molded for medical device application

What Is LSR Injection Molding?

Liquid Silicone Rubber (LSR) injection molding is an advanced thermoset process for creating durable, flexible, and highly precise silicone components. LSR is delivered as a two-part liquid, automatically mixed and injected into a heated mold, where it cures quickly under high pressure.

This process is ideal for:

  • High-volume production

  • Complex geometries with tight tolerances

  • Thin-wall components

  • Biocompatible, food-grade, or flame-retardant silicone needs

Key LSR Processing Advantages

LSR injection molding offers numerous engineering and manufacturing benefits, making it an ideal choice for mission-critical applications.

High Dimensional Stability

  • Parts maintain consistent shape and precision even under stress or temperature fluctuations.

Fully Automated & Repeatable

  • Reduced labor cost, minimal material waste, and high consistency across large production runs.

Rapid Cycle Times

  • Quick curing allows fast, efficient mass production without compromising quality.

Clean Production Environment

  • Ideal for medical- and food-grade applications; LSR does not outgas harmful chemicals.

Design Flexibility

  • Supports undercuts, microfeatures, and overmolding onto metal or plastic inserts.

Wide Operating Temperature

  • Stable from -50°C to +250°C, ideal for automotive, medical, and industrial part

Soft BPA-free baby nipples and teethers molded from food-grade LSR

Advantages of LSR Molded Components in End Use

Using LSR-molded parts gives your products a significant functional edge:

  •  Long-lasting elasticity without deformation

  • Soft-touch feel suitable for skin contact

  • Excellent weathering and UV resistance

  • Non-toxic and hypoallergenic (ISO10993 & FDA compliant)

  • Resistant to water, chemicals, and mechanical wear

  • Easy to sterilize – suitable for Class I/II medical devices

Typical Applications by Industry

IndustryIndustryKey Advantages
Medical Devices
Seals, valves, masks, tubes

Biocompatible, sterilizable, durable

Infant & Baby Care
Pacifiers, teething rings, nipples

Food-safe, soft texture, BPA-free

Automotive
Sensor seals, ignition parts

High heat resistance, longevity

Consumer Electronics
Keypads, protective gaskets

Flexible, waterproof, durable

Industrial Equipment
O-rings, diaphragms, bellows

Chemical & abrasion resistance

Kitchenware
Baking molds, handles, gaskets

High-temperature, non-stick, FDA-grade

Our LSR Processing Capabilities

We provide full-cycle OEM LSR manufacturing from design to packaging, including:

  • 🛠 Custom mold design & CNC precision tooling

  • ⚙ Multi-cavity & micro-precision LSR molds

  • 🧪 FDA, LFGB, and medical-grade silicone sourcing

  • 🔄 Overmolding & insert molding (plastic or metal cores)

  • 📦 Post-curing & cleanroom packaging available

  • 📐 Tolerance as tight as ±0.02 mm

Our modern silicone molding facility is optimized for both small batches and high-volume OEM production.

Why Partner With Us for LSR Molding?

10+ years of custom silicone processing experience

Material consultation tailored to your application

Certification: FDA, LFGB, ISO9001, ROHS

Stable lead times & global delivery support

Low MOQ, flexible mold ownership, NDA welcome

    We help startups and global brands turn silicone ideas into scalable, compliant products.