Vacuum Casting, also called silicone mould, is a manufacturing process to make the mold in silicone from a master model, and then cast the parts out from polyurethane, transparent polyurethane, ABS and other materials under vacuum, to achieve the strength and hardness of ABS and other materials. The parts can be casted according to the color required by customers.
Vacuum Casting is the best replacement of injection molding for low volume products. Casting material hardness and strength is very close to the injection molding material. Vacuum casting is a very low-cost and fast way to make prototypes if you want 20 to 100pcs of parts.
Advantages of Vacuum Casting
Fast turnaround
Usually 2 weeks or less to make parts ready
Surface finish options
Different Colors, Textures & Finishes Available
Economical in both cost and time
Silicone molds are less expensive than metal tools, but more easier and faster to make
Repeatability
Silicone molds can be used around 20 times before replacing
large part making capacity
Very large parts can be produced shortly, supported by large vacuum casting machine
Excellent Physical Propertie
The casting parts have good Physical Properties for functional purpuse
Casting Resin Material Available
Casting resins are polymers with a wide range of properties and use. SUDACNC offers different kinds of casting resins materials to meet your applications, including Axson from France and Hei-Cast from Japan. Materials with certain properties are similar to engineering production plastics, such as ABS, PMMA, PC, PP, PA, etc. Some special materials are also available, like high-temperature resistant (120℃ or 200℃) or fire-resistant (UL94-V0).
Our Vacuum Casting Capability
How It Works (3 steps)
Step 1. Master model building– CNC machined or 3D printed via SLA or SLS
Step 2. Silicone mold making – liquid silicone is poured around the master model and fully cured. Once dried, the mold is cut open and master is removed
Step 3. Casting parts – the casting resin is poured into the cavity to create products, like replicate
Detailed step as below
±0.02mm
Tolerance
20+
Machines
6 Days
Samples Delivered
ISO
13485, 16949, 14001
SUDACNC Urethane Casting Service
SUDACNC’s urethane casting services support every stage from prototype testing, function validation and market testing phases. Operating from ISO-certified facilities and vetted manufacturing partners, we ensure you stay on sechedule and within budget. We cast urethane parts with tolerances down to ±0.10mm and lead times as short as 6 days. A variety of polyurethane and silicone materials, surface finishes, and color options are available for applications in automotive, electronics, and consumer products.
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
Precision Metal Components
SUDACNC Vacuum Casting Capabilities
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Feature
Description
Tolerance
At SUDACNC, replicated casts follow ISO-2768-CL standards. Local tolerances can reach ±0.15mm, and small holes can achieve up to ±0.10mm precision.
Color and Finishing
Supports a wide range of colors, transparency levels, and surface finishes.
Maximum Part Size
Up to 2.3 × 1.3 × 0.6 meters.
Daily Capacity
Up to 200 pieces per day.
Lead Time
Lead time varies based on part complexity and order volume. The full process includes prototype making, silicone mold creation, casting, and finishing. Simple single parts can ship in under 5 days, but larger batches may require more time depending on the project.
From Prototyping to Production
Moving from initial concepts to market-ready products, SUDACNC’s vacuum casting services offer cost-effective solutions for your product development.
Vacuum casting is a precision manufacturing process used to create high-quality plastic or rubber parts in small to medium production runs. By utilizing a vacuum to draw liquid material into a silicone mold, this technique produces detailed, consistent components that closely replicate the original master pattern. Ideal for prototyping and low-volume production, vacuum casting offers a cost-effective alternative to injection molding, with faster turnaround times and exceptional surface finish capabilities. Common applications include automotive parts, medical devices, and consumer electronics components, where accuracy and aesthetic quality are critical.
Vacuum Casting With SUDACNC
At SUDACNC, our vacuum casting services combine advanced technology with expert craftsmanship to deliver superior results for your project. We specialize in producing complex parts with tight tolerances, using state-of-the-art vacuum casting equipment and high-grade materials. From rapid prototyping to bridge production, our process ensures:
Precise replication of intricate details (down to 0.1mm accuracy)
A wide range of material options, including polyurethanes, silicones, and rubber-like compounds
Custom finishes (painting, plating, texturing) to match your specifications
Fast lead times (as little as 3-6 days for small batches)
Whether you need functional prototypes or end-use parts, SUDACNC’s vacuum casting solutions scale with your needs, reducing costs without compromising quality.
Ready to get started on your Vacuum Casting Service?
Types of Vacuum Casting
Vacuum casting encompasses several specialized techniques tailored to different materials and applications:
Polyurethane Vacuum Casting: The most common type, using two-part polyurethane resins to create rigid or flexible parts. Ideal for mimicking the properties of engineering plastics (ABS, PP, PC).
Silicone Vacuum Casting: Uses liquid silicone rubber (LSR) to produce heat-resistant, flexible components. Suitable for gaskets, seals, and medical devices.
Rubber Vacuum Casting: Focuses on elastomeric materials, delivering parts with high durability and elasticity, often used in automotive and industrial seals.
Overmolding Vacuum Casting: Combines multiple materials (e.g., rigid plastic with soft rubber) in a single process, enabling complex, multi-material parts.
Ready to get started on your Vacuum Casting Service?
Materials for Vacuum Casting
Vacuum casting supports a diverse range of materials to match specific functional requirements:
Polyurethanes: Available in rigid (Shore D 60-85), flexible (Shore A 30-90), and foam variants. Resistant to impact, chemicals, and UV exposure.
Silicone Rubbers: Heat-resistant (up to 200°C), biocompatible, and excellent for electrical insulation. Ideal for medical tools and high-temperature applications.
Thermoplastic Elastomers (TPE): Offer rubber-like elasticity with plastic processability, suitable for grips, gaskets, and wearables.
Epoxies: Provide high strength and dimensional stability, often used for structural components and electronics housings.
Each material can be customized with additives for flame resistance, conductivity, or color matching.
Ready to get started on your Vacuum Casting Service?
Finishes for Vacuum Cast Parts
Vacuum cast parts can be enhanced with a variety of finishes to meet aesthetic and functional needs:
Plating: Chrome, nickel, or gold plating for a decorative, corrosion-resistant surface.
Texturing: Mold-in patterns (brushed, embossed, or custom designs) for improved grip or branding.
Polishing: High-gloss finishes for cosmetic parts, achieving a mirror-like surface.
Vapor Deposition: PVD coatings for enhanced hardness and wear resistance, ideal for industrial components.
Applications of Vacuum Casting
Vacuum casting is widely used across industries for its versatility and precision:
Automotive: Prototyping interior trim, dashboard components, and rubber seals.
Medical Devices: Producing custom enclosures, surgical tools, and biocompatible parts.
Consumer Electronics: Creating phone cases, wearables, and cable management components.
Aerospace: Low-volume production of lightweight, high-strength parts for drones and aircraft.
Toys & Recreation: Manufacturing detailed figurines, game pieces, and durable outdoor equipment.
Ready to get started on your Vacuum Casting Service?
Advantages & Disadvantages of Vacuum Casting
Advantages:
Cost-effective for small batches (10-500 units) compared to injection molding.
Fast turnaround (molds ready in 1-2 days, parts in 3-6 days).
High detail replication, including fine textures and complex geometries.
Wide material selection to match end-use properties.
No tooling costs for low-volume runs (silicone molds are reusable 20-50 times).
Disadvantages:
Cost-effective for small batches (10-500 units) compared to injection molding.
Fast turnaround (molds ready in 1-2 days, parts in 3-6 days).
High detail replication, including fine textures and complex geometries.
Wide material selection to match end-use properties.
No tooling costs for low-volume runs (silicone molds are reusable 20-50 times).
Ready to get started on your Vacuum Casting Service?
Ready to get started on your Injection Molding project?
Free shipping available for domestic CNC orders
Our Factorys
CNC Machine Shop
Established:2015
Number of Machines:500 Machines
Location:ShenZhen
Sheet Metal Factory
Established:2019
Number of Machines:150 Machines
Location:ShenZhen
Jnjection Molding Factory
Established:2018
Number of Machines:350 Machines
Location:FoShan
3D Printing Factory
Established:2015
Number of Machines:300 Machines
Location:ShenZhen
Vacuum Casting Factory
Established:2013
Number of Machines:220 Machines
Location:DongGuan
Die Casting Factory
Established:2017
Number of Machines:100 Machines
Location:ShenZhen
SUDACNC Trusted Global Partner
We are your trusted manufacturing partner. Precision Machining and Efficient Management Delivery of High-Accuracy Global Parts. We guarantee consistent quality and transparency with punctual and reliable lead times.
We are with you every step of the way, from validating a design to mass production.
30M+
Network-wide parts produced
5,000+
Companies served
5,200+
Combinations of material, process, finish
options
30+
Supply regions to mitigat e risk & enhance delivery speed
Metal and Plastic Production Solutions
SUDACNC’s digital manufacturing marketplace is your one-stop solution for production. Our team is the perfect solution for your product manufacturing needs with our staff of technical experts, ease of our secure quoting platform, and global manufacturing capacity.
SUDACNC offers competitive pricing and lead times on plastic injection molding, die casting, metal stamping, metal extrusion, plastic extrusion, sheet metal, laser cutting, waterjet cutting, laser tube cutting, and tube bending services. Start your quote or contact us today to begin.
Choose Your Optimal Price and Lead Time
The SUDACNC Instant Quoting Engine® makes it easy to upload a CAD file and compare prices and lead times in just a few clicks. With thousands of manufacturing suppliers in all 50 U.S. states and more than 20 countries, SUDACNC’s extensive network gives you options to choose the shipping timeline and price that fit your business and budget.
SUDACNC offers price matching and a 30-day price guarantee on quotes, giving you peace of mind that you’re getting the best price. When ordering prototypes — originals or models of parts that are intended exclusively for non-commercial purposes — the price shown at checkout includes tariffs. Shipping is also included, as long as your package is standard-size.
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SUDACNC Four Workflow Phases
From start to finish, our process is built for speed and clarity. Each step is transparent, keeping you in control. The result: precision results delivered on time.
Real-Time Quotes
Confirm transparent price structures, timelines, and DFM visibility in minutes, with the SUDACNC quoting engine supporting optimal strategic decisions. Upload your CAD files to reduce time spent in quoting cycles.
Quality Assurance
SUDACNC enables you to access a single, streamlined platform for managing versatile professional collaborative relationships with certified suppliers and diverse manufacturing capabilities, allowing you to scale production to meet unlimited volume requirements.
Deep Manufacturing Network
Every part of SUDACNC goes through rigorous inspection standards to ensure that we meet all your dimensional, cosmetic, and performance needs and requirements.
Industry-Focused Expertise
SUDACNC works across multiple industries, including aerospace, automotive, medical, robotics, consumer, and industrial machinery, delivering consistent quality in highly demanding projects.
All-in-One Your Reliable Manufacturing Partner
Design&Engineering Support
Rapid Prototyping
Production and Manufacturing
Quality control and distribution
Design and Engineering Support
Our work begins with understanding your design with engineering clarity. Knowing that the starting point of every successful product is understanding the engineering aspect, we work with you to comprehend design needs, analyze the specifications, and make manufacturable parts. Our early risk assessments streamline revisions, contain costs, and deal with ever-decreasing performance variability.
Practical DFM Comments to Support Design Decision Improvementss
Material Suggestions Based on Your Application
Engineering Assistance to Boost Efficiency and Longevity
Rapid Prototyping
Change concepts into real-life components fast and with ease. Rapid Precision services enable you to validate your design, test its functionality, and work out any remaining details before entering the production phase, allowing complete design confidence. Directly accompanying any design stage, fast production welcomes you to the design stage without demand to sacrifice precision.
Quick prototypes to perform experiments.
Prototypes for Form, Fit, and Function Validation
Prototyping is Perfect for Design Validation, Demonstration, and Initial Production Stages.
Production and Manufacturing
When your design is production-ready, we make the transition to production seamlessly. Supporting low, medium, and high-scale production, we maintain the same quality, repetition, and precision in each manufacturing run. Adaptable workflows allow for smooth production transitions as demand increases.
Encompassing all aspects of manufacturing
Consistency and repeatability across all ranges of production
Versatile manufacturing capabilities
Quality control and distribution
The meticulous nature of our work carries through all aspects of our business. Each component undergoes a thorough review to meet the required specifications and standards to be qualified for shipping. Following our extensive and streamlined order delivery process, we guarantee our customers receive parts that are ready to be joined and utilized for intended purpose in a timely fashion, without exception.
Quality control aligned with ISO standards
Quality documentation with complete traceability
Accurate delivery to all parts of the world
Quality Assurance & Compliance
in Every Part We Manufacture
We stay true to industry standards that have to do with quality and safety, like ISO 9001:2015 and AS9100. We assess and check every part multiple times to ensure that inspections have been done thoroughly and that we can offer no exceptions to your needs.
ISO 9001 Certified
100% Quality Inspection
Premium Material Selection
What Makes SUDACNC Different from Others
Instant Smart Quoting
Get quick pricing and DFM insights to optimize designs and reduce costs.
Global Supply Network
Access our global manufacturing network for reliable solutions of all sizes.
Certified Quality Control
Strict inspection protocols for every part. We ensure 100% accuracy and high standards.
Fast Reliable Delivery
Punctual shipping for all custom orders. Your projects always stay on schedule.
Our rich project experience accumulation and pre-analysis before production enable us to consider comprehensively and provide the mostsuitable and economical solutions, to
ISO 9001 Certified
100% Quality Inspection
Premium Material Selection
Save Your Time
Our skilled engineers team and sales
team work close to make professionaland efficient communication with thecustomers, to save the time.
48-Hour Standard Delivery
Express 24-Hour Option
Real-Time Order Tracking
Responsible and efficient after-salesservice
We will absolutely take our responsiblityfor any potential part quality issue, andcommunicate and solve it timely to meetcustomer's demand.
Expert Technical Consultation
Custom Solution Development
Dedicated Support Specialists
What Our Clients Say
"Implementing their precision-engineered components has dramatically lowered our operational overhead. The technical support team provided exceptional guidance in tailoring the ideal setup for our specialized manufacturing floor."
— Emily Watson, Head of Manufacturing
"Faced with a sudden shortage on our main assembly line, their team expedited the critical components within a day, preventing catastrophic financial losses. Their agility and customer-first mindset make them a premier strategic partner."
— David Lin, Supply Chain Director
"The dimensional consistency of their CNC parts is flawless, which seamlessly integrated into our rigid Outgoing Quality Control protocol. We haven't had a single batch rejection since switching to their fulfillment services."
— Marcus Vance, Quality Assurance Manager
"Their end-to-end transparency and automated dispatch tracking have revolutionized how we manage our warehouse flow. It's rare to find a manufacturing vendor that pairs heavy industrial expertise with such agile digital efficiency."
— Sophia Zheng, Procurement Specialist
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