Liquid Silicone Rubber Molding

Delivered on time with strict quality control, XY Machining provides professional Liquid Silicone Rubber (LSR) injection molding services for both prototyping and mass production. From medical-grade silicone components to high-performance industrial parts, we support low-volume runs and high-volume production with consistent precision and repeatability.

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What is Liquid Silicone Rubber Molding?

Liquid Silicone Rubber (LSR) molding is a high-precision injection molding process used to manufacture flexible, heat-resistant, and durable silicone rubber parts. The two-component liquid silicone material is mixed, injected into a heated mold cavity, and cured to form complex geometries with excellent dimensional stability. At XY Machining, we use advanced LSR injection molding systems to produce medical-grade, food-grade, and industrial silicone components. The process supports tight tolerances, intricate designs, and high repeatability, making it ideal for automotive, medical devices, electronics, and consumer products that require flexibility, chemical resistance, and long service life.

Why Choose XY Machining for Liquid Silicone Rubber Molding?

Our global manufacturing network and engineering expertise allow us to deliver high-precision LSR molded parts from prototype tooling to full production volumes. We optimize mold design, gating systems, and curing cycles to ensure consistent quality and reduced production costs. We operate under certified quality systems and follow strict inspection standards to ensure every silicone component meets technical specifications. From material selection to final quality checks, we provide traceability, fast lead times, and dependable production performance for critical industries such as medical, automotive, and electronics.

Standard Mold Finish

A clean molded surface directly from the tool, suitable for functional silicone components.

Matte Texture

Light surface texturing applied to reduce glare and improve grip performance.

Polished Finish

Smooth cavity polishing for enhanced surface clarity and refined appearance.

Custom Texture

Special mold textures available for branding or specific aesthetic requirements.

Medical-Grade Finish

Controlled surface quality for medical and healthcare applications.

Soft-Touch Finish

Optimized surface feel for ergonomic consumer and wearable products.

High-Gloss Finish

Polished mold cavities create smooth, premium-looking silicone parts.

Custom Color Matching

Pigment blending allows precise color matching for branded components.

Liquid Silicone Rubber Molding Surface Finishes

Capabilities for Liquid Silicone Rubber Molding

Feature	Description
General Tolerances	ISO 2768-M standard tolerance range
Precision Tolerances	Achievable tolerances up to ±0.05 mm depending on geometry
Minimum Wall Thickness	0.3–0.5 mm depending on material grade
Material Options	Medical-grade, food-grade, and industrial LSR
Maximum Part Size	Based on mold design and press capacity
Production Volume	Prototype to 100,000+ parts
Tooling Options	Aluminum prototype molds & hardened steel production molds

XY Machining Industries Solutions

Medical Precision

Delivering high-precision parts with zero-tolerance accuracy for the healthcare sector. We ensure every component meets the strict safety and quality standards required for medical equipment.

Electronics Industry

Manufacturing micro-accurate components for complex electronic devices and circuitry. Our process ensures superior conductivity, heat resistance, and a perfect fit for every small-scale part.

Automotive Engineering

Precision machining for high-stress engine parts and structural automotive components. We deliver durable, high-performance solutions that drive innovation in the modern automotive industry.

Robotics Solutions

We provide custom CNC machining for advanced robotic components and automation systems. Our parts are engineered for durability and high-speed performance in demanding environments.

What Makes XY Machining Different from Others

Instant Smart Quoting

Upload your CAD files to receive fast, accurate pricing with design-for-manufacturing (DFM) insights.

Global Manufacturing Network

Scalable CNC milling capacity for both low-volume and production manufacturing.

Certified Quality Control

Comprehensive inspections, calibrated measuring equipment, and documented QC processes.

Fast Reliable Delivery

On-time production scheduling and dependable shipping for U.S. customers.

Our Liquid Silicone Rubber Molding Gallery Parts

Explore our portfolio of precision LSR molded components, including medical seals, silicone gaskets, valves, wearable device parts, and automotive connectors. Each part reflects our commitment to dimensional accuracy, clean molding processes, and ISO-aligned quality inspection standards.

Design Guidelines For Liquid Silicone Rubber Molding

Feature	Description
Draft Angle	1°–3° recommended for easy demolding
Wall Thickness	Maintain uniform thickness to prevent air traps
Undercuts	Can be achieved with slides or advanced tooling
Radii & Corners	Rounded corners improve material flow
Venting	Proper venting ensures bubble-free silicone parts
Shrinkage Rate	Depends on silicone grade and curing conditions
Overmolding	LSR supports bonding with plastics or metals

Rapid Tooling

Rapid tooling let’s you go faster to go from an idea to functional parts. With our advanced CNC machining service, we create molds and tooling with precision needed to test designs, validate fit, and function and bring products to market faster. It’s perfect for prototypes, low volume runs, and early-stage development where outworking competitors is critical and precision matters most.

Production Tooling

For our production tooling, we prioritize long-term durability. With top grade materials and precision CNC machining, we make tooling that allows full-scale production without losing accuracy. If you need thousands of the same parts, and even with batch production, we deliver consistent, reliable tooling and stable production cycles.

Pros of Liquid Silicone Rubber Molding

High Precision & Repeatability:LSR injection molding delivers consistent, tight-tolerance silicone parts for demanding applications.
Excellent Temperature Resistance: Withstands extreme heat and cold without losing flexibility or performance.
Biocompatibility & Safety:Medical-grade LSR is ideal for healthcare, food, and wearable applications.
Chemical & UV Resistance:Durable against moisture, chemicals, and environmental exposure.

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From Prototype to Production — One Reliable Partner

XY Machining delivers precision CNC machining services for engineering teams that require tight tolerances, documented quality control, and dependable delivery. From prototype development to full production, we manufacture functional, production-ready components built exactly to your technical drawings. Our team combines advanced CNC milling and turning capabilities with structured inspection processes to ensure accuracy, repeatability, and consistent results — regardless of part complexity.

Proven expertise in medical, automotive, electronics, and robotics industries
Responsive engineering support with fast quotation turnaround
Modern 3-axis and 5-axis CNC machining capability
Collaborative DFM feedback to reduce risk and cost
Reliable on-demand production with documented inspection

Get In Touch With Us!

Prompt response guaranteed within 12 hours

How It Works – 3-Stages Workflow

We guarantee that CNC parts are delivered on time and that the process is completely transparent in the following 3 simple steps:

Upload Your Files

Instant prices with DFM feedback for many file types.

We Manufacture Your Parts

You can select from many materials and methods.

Tracking and Receiving Your Parts

View the QC documentation and inspection photographs.

End-to-End Solutions From XY Machining

Rapid Prototyping

With our CNC machining service, bringing your ideas is a thing of the past. We create prototypes with the functionality or you to improve your ideas with minimal to no impact on production.

Low Volume Production

High-quality production of machined parts is possible without the need for high volumes of parts. Our low-volume production service is tailored with high-volume flexibility to suit your early-stage product needs.

End-to-End Solutions

Your entire production workflow is managed by us from start to finish. Scheduled delivery is guaranteed for all projects regardless of complexity.

Frequently asked questions

What industries commonly use LSR injection molding?

LSR molding is widely used in medical devices, automotive components, electronics, consumer products, and food-grade applications due to its flexibility and heat resistance.

What is the difference between LSR and solid silicone rubber?

LSR is a two-part liquid material injected into a mold and heat-cured, allowing faster cycle times and higher precision compared to traditional compression molding.

Is Liquid Silicone Rubber safe for medical use?

Yes. Medical-grade LSR is biocompatible, sterilizable, and suitable for healthcare and wearable medical applications.

Can LSR parts be overmolded onto plastic or metal?

Yes. LSR supports overmolding and insert molding, allowing silicone to bond with thermoplastics or metal components.

What production volumes are suitable for LSR molding?

LSR injection molding supports low-volume prototyping as well as high-volume mass production with consistent quality and repeatability.