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Urethane and Silicone Casting

Looking for parts with intricate details but have low volume orders? Gree-Ge specializes in Urethane and Silicone Casting and offers unmatched quality for durable prototypes and precision parts. Simply upload your design now!

Urethane and Silicone Casting

Why Choose Gree-Ge for Urethane and Silicone Casting?

Gree-Ge gives you the best price and utmost precision when it comes to casting parts. They are highly flexible, durable, and detailed with a fast turnaround time. Our urethane casting offers plastic properties which is ideal for functional prototypes and small production runs. Silicone casting is great for high precision molds and flexible components. We help manufacturers of automotive, medical, and consumer products achieve superior mechanical performance and aesthetic quality with our wide range of material options.

What is Urethane and Silicone Casting?

Urethane and silicone casting process involves the casting of silicone rubber, polyurethane, and epoxy resins into master models which are replicated as highly accurate copies. The use of urethane resins helps to make strong, functional, plastic-like parts which are further enhanced by silicone casting for soft, flexible, or high-detail components. Perfect for low-volume production, rapid prototyping, and even custom parts production.

What is Urethane and Silicone Casting

Urethane and Silicone Casting-Tolerances

Description Tolerance Notes
Distance Dimensions +/- 0.010” or +/- 0.003” per inch, whichever is larger, is typical. Irregular or overly-thick geometries may cause deviances or deflection due to shrinkage.
Shrink Mitigation A shrinkage rate of +0.15% can be expected due to thermal expansion of the liquid, and the response of the flexible mold.
Surface Quality Surface finish is externally smoothed to a satin or matte surface. Grow lines may be present on internal or difficult-to-access features. Polishing or custom finishes must be clearly defined and agreed upon at the point of order.
Feature Definition Sharp corners and text may appear slightly rounded.
Size Recommendation We can offer urethane cast parts as large as 30” (0.762 m) long.

Urethane and Silicone Casting Materials and Finishing

Our Urethane and Silicone Casting materials offer a wide range of options, are certified, and environmentally friendly, providing premium solutions for your products. Contact us now to learn more!

  • Shore A 10 (TC-5005 or equiv.)
  • Shore A 20-30 (TC-5130 or equiv.)
  • Shore A 30-40 (TC-5140 or equiv.)
  • Shore A 40-50 (TC-5150 or equiv.)
  • Shore A 50-60 (Smooth-Sil™ 960 or equiv.)

Shore D 82-86 

Shore D 85

Shore A 25-95 

Shore A 40-95

Smooth, satin-like finish that appears frosted on transparent parts. Reduces fingerprint visibility, ideal for handheld areas.

Slight sheen with easy-to-clean surface, positioned between matte and high-gloss.

Highly reflective finish with high transparency for clear parts, ideal for cosmetic models and lenses.

Applied through paint and manual techniques to enhance grip and reduce scuff marks on high-use surfaces.

Need a specific finish?

and we’ll explore a solution for you.

Why Choose Us

Choose Gree-Ge for seamless, high-quality manufacturing. Our efficient, cost-effective solutions ensure precision, reliability, and fast turnaround times. With expert coordination and advanced technology, we deliver superior results tailored to your needs.
Extensive Capabilities

Full range of manufacturing services meet diverse project requirements and provide custom parts with unmatched quality and efficiency.

High-Quality Standards
Our certifications: ISO 9001:2015/ISO14001 ensure that our processes meet international standards, providing our clients with high-quality, reliable, and precise products.
State-of-the-Art Technology
Our 3D printing services deliver superior quality and rapid prototyping, ensuring that our clients receive production-quality parts quickly and efficiently.
Versatile Solutions
Save up to 30% without compromising on exceptional service quality for both small and large production runs.
Customer-Centric Approach​
Ensures personalized service and support, meeting clients’ specific needs with rapid quotations and expedited lead times for seamless project execution, regardless of order size.
Precision and Tolerance
We excel in high-precision manufacturing, achieving ±0.0004″ tolerances to meet exacting standards.
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Bring Your Designs to Life with Gree-Ge

Experience precision CNC machining with Gree-Ge. From intricate prototypes to large-scale production, we’re ready to bring your ideas to reality. Contact us today to discuss your project needs!

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Urethane and Silicone Casting with Gree-Ge

Urethane and Silicone Casting provides budget-friendly and flexible prototyping and batch manufacturing accompanied by exceptional surface quality. The team at Gree-Ge manages both methods well as they assist numerous industry clients speedily achieve product reality. 

The crucial need for faster production schedules and lowered development expenditures exists in current market conditions especially for prototype manufacture and small batch manufacturing.

For this purpose, Gree-Ge stands above other services because we provide casting solutions with rock-solid precision and flawless consistency as well as polished surface quality. Our urethane and silicone casting services accelerate product development from design phase through manufacturing production regardless of new product development or existing design refinement.

Understanding Urethane Casting

Liquid polyurethane resins form solid part prototype molds through urethane casting which is also known as polyurethane casting using silicone molds. Users select urethane casting for both prototype  development along with production runs up to a medium scale because it offers adjustable material attributes including hardness and color and mechanical properties.

Key Advantages of Urethane Casting

  • Silicone mold casting enables the creation of a wide array of polyurethane parts which range from elastic rubber to firm rigid structures.
  • The final parts achieve metallic surface finishes that identically match injection molded industrial elements.
  • The creation of molds through this process delivers fast service at reduced metal-tooling expenses.

Understanding Silicone Casting

Silicone casting utilizes silicone rubber as itself a mold technology and as an end product material. Silicone rubber provides two casting functions since it allows you to construct moldings for both different resin types (such as urethanes) and low-temp metals. Silicone rubber serves as the last material to produce elastic heat-resistant components that are also biocompatible through liquid silicone injection into custom molds.

Key Advantages of Silicone Casting

  • The main strengths of Silicone rubber include its exceptional elastic properties along with softness which enables the creation of gaskets and seals and wearable tech equipment.
  • Silicone components retain their form and functionality under extreme temperatures because of their high thermal stability properties.
  • Silicone material remains the most suitable choice for medical devices and food-grade equipment because of its biocompatibility properties.
  • The same method used for urethane applies to silicone because both materials duplicate detailed features effectively.

Urethane and Silicone Casting: A Quick Comparison

Below is a concise table illustrating some key distinctions between urethane and silicone casting when they’re used as final part materials:

Feature Urethane Silicone
Hardness Range Wide range (shore A to shore D) Typically softer, more elastic
Heat Resistance Moderate (can degrade at high temps) Excellent (maintains form under heat)
Chemical Resistance Good to excellent (depends on formula) Very good, especially to water & UV
Typical Applications Prototypes, functional housings, gears Seals, medical devices, consumer goods
Cost & Availability Affordable in various formulations Generally higher cost, specialty grades

Why Choose Gree-Ge for Urethane & Silicone Casting?

Gree-Ge brings together experts with extensive experience in material choice and mold creation knowledge as a foundation for our services. Our team makes a selection between urethane and silicone casting methods to deliver products which match every specified standard.

Cutting-Edge Facilities

Gree-Ge continues to invest in its high-end molding equipment which results in precise casts and fast delivery speeds. The company operates casting stations with temperature control alongside vacuum degassing chambers for comprehensive service.

Tailored Solutions

We don’t believe in one-size-fits-all. Through our material sourcing abilities combined with custom mixing services we can provide you with any polyurethane blend strength or medical-grade silicone formulation you require.

Quality Assurance

Our detailed quality assurance system allows you to receive parts that fulfill your criteria involving dimensions alongside surface finish quality and mechanical operational capabilities through mold evaluation and cure testing stages.

Versatile Production Volumes

Our services accommodate the manufacture of only a few prototype quantities. Or perhaps a few hundred parts for a limited product run? No problem. We operate with flexibility which gives us the capability to adjust production scale to meet specific requirements.

Ready to kickstart your casting journey? Get in touch with Gree-Ge today. We’ll help you pick the right material and casting method, ensure seamless project management, and deliver parts that meet (and often exceed) expectations.

Expert Insights & Industry Trends

Explore the forefront of advanced manufacturing with Gree-Ge. Our blogs provide expert insights, industry trends, and practical tips to enhance efficiency, precision, and innovation in your production processes.

Frequently Asked Questions

Urethane and Silicone Casting

  • Which industries benefit most from urethane and silicone casting?

    They’re ideal for sectors needing low-to-medium volume parts, like consumer electronics, medical devices, and automotive. 

  • How do I decide whether to use urethane or silicone for my project?

    Urethane offers strength and varied hardness; silicone excels in flexibility, heat resistance, and biocompatibility. 

  • Is color matching possible with urethane and silicone casting?

    Yes. We can tint or pigment both materials to achieve specific colors. 

  • What surface finishes can I achieve with these casting methods?

    Any finish that matches the master mold—polished, matte, or textured. 

  • How many parts can I produce from a single mold?

    Urethane molds often produce 20–50+ parts; silicone mold longevity varies, but we estimate before starting. 

Get In Touch With Us!
Prompt response guaranteed within 12 hours
🔐 All uploads are secure and confidential