Urethane Casting Service

We offer cost-effective urethane products and parts prototyping and low-volume manufacturing services.

Urethane Casting Parts 5

Urethane Casting Service

Urethane casting is a process where urethane resins are poured into the silicone rubber molds to produce the plastic parts in low-volume productions. LEADRP provides urethane casting service to improve the speed and ability to cope with your prototyping and low-volume production applications.

Urethane Casting Technical Specifications

Standard Lead TimeUp to 10 copies within 14 days
Standard Tolerance±0.3% (with a lower limit on ± 0.3 mm on dimensions smaller than 100 mm)
Minimum Wall ThicknessTo ensure that the mold is filled properly, a wall thickness of at least 0.75 mm is necessary. For best results, we recommend a wall thickness of at least 1.5 mm
Maximum Part DimensionsThe size of the mold is limited by the dimensions of the vacuum chamber (1900 x 900 x 750 mm) and by the volume of the product (maximum volume: 10 liters)
Typical QuantitiesUp to 25 copies per mold (depending on the mold’s complexity and the casting materials)
Surface StructureHigh-quality surface finish comparable to injection molding

What is Urethane Casting and How Does it Work

Urethane Casting is a process of making plastic parts. Urethane casting is similar to injection molding, master patterns can be produced by CNC machining or 3D printing. The material used in the process is thermoplastic polyurethane. It is a material that has properties similar to rubber, flexible and feels like silicone.

The urethane is typically poured into a silicone(RTV silicone) or epoxy mold, where it cures (hardens). Then create polyurethane casting under vacuum, so urethane casting is also known as vacuum casting. The result is that the urethane casting part has the same shape as the original master model. Once the silicone mold is ready, polyurethane resin can be cast into it to get your desired parts.

Urethane casting makes it possible to cast high quality parts from more affordable silicone tooling. Urethane casting is an excellent choice for creating low-volume production runs from 50 to 10,000+ pieces.

Advantages of Urethane Casting Parts

Urethane Casting Materials

Polypropylene (PP) like (80D)
Polycarbonate (PC) like (75D)
Acrylonitrile Butadiene Styrene (ABS) like (83D)
PE-like (65D)
Thermoplastic Polyolefins (TPO or TPE-O) like
Talc-Filled Polypropylene like
Glass-Filled Nylon like
Thermoplastic Polyurethane (TPU) like
Fire-Retardant (FR) PU like (78D, 80D, 85D)
High Impact (85D, 88D, 80D – 90D)
Polyamide (PA) like (80D)
Acrylonitrile Butadiene Styrene (ABS) + High Density Polyethylene (HDPE) like (70D)
Elastomer like (60A, 65A, 70A, 90A, 95A)
Polyurethane (PUR or PU) like (25A, 30A 40A, 50A, 60A, 70A, 80A, 84D, 85A, 90A)

Surface Finish Options for Urethane Casting Parts

Surface finish is applied to parts after they have been machined to create a unique surface layer to meet the hardness, chemical resistance, and appearance requirements of the products. It depends on material properties and the application of the part. LEADRP offers the following finishing options for injection molded parts services:

Urethane Casting Samples

Alternaltives for Urethane Casting

LEADRP applies a variety of vacuum casting techniques and equipment to improve the speed and ability to cope with your prototyping and mass production applications. For product and parts with tight tolerance requirements, CNC machining or injection molding will be a better choice.



At LEADRP, we use a variety of rapid prototyping techniques to produce engineering parts, prototypes, and complete working products. Since starting our business in 2006, we have put a lot of effort into our facilities and people to offer more competitive services than many other companies in rapid prototyping and manufacturing.

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Quick Response

With experienced engineering and operations team to help you with instant quotations, production, and delivery.

Rich Industry Experience

We help to dealing with varying requirements of material and tolerance in the most challenging industries since 2006 .

Quality Guarantee

As an ISO certified company, we always ensure our products and services comply with international standards.

How We Works

Instant Quote

Send us 2D & 3D design files, then get free DFM feedback and quotes in a few hours.


Once the quote and order are confirmed, production starts in a few hours.

Delivery & Receive

After passing quality inspections, the parts are carefully packed and ready for shipment.

Served Industries

LEADRP is a leading provider of rapid prototyping service and low-volume manufacturing service for mission-critical applications in the Aerospace, Automotive, Medical & Life Science, Oil & Gas, Food and Beverage industries, Semiconductor and more.


Bracket, turbines, handles, and more.


Grills, handles, decos, and more.


Sculptures, mockups, and more.


Dental, implants, surgical models, and more.

Consumer Products

Household, electronics housings, and more.


Polyurethanes, die castings, chemical resistance parts, and more.

Oil and Gas

Fluoropolymer, silicone rubbers, and more.

Food and Beverage

Food-grade plastics and engineering polymers, and more.

We make your custom products better and faster

LEADRP could help you with all the important and complex work of custom product prototyping and manufacturing, from initial designs to low-volume production, post-processing, logistics, and more. LEADRP is dedicated to speeding up your prototyping and manufacturing processes and reducing costs. Whether it's a one-off prototype made or a batch production of thousands, LEADRP is here to help.

  All uploads are secure and confidential, check our IP Protection Policy. If it prompts that the file format does not support uploading, please compress the file into a zip file before sending it.

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We make your custom products better and faster

Whether it's a one-off prototype made or a batch production of thousands, LEADRP is ready to support your project. Just tell us your project, and we will contact you within 12 hours.

All uploads are secure and confidential, click to check our IP Protection Policy. You can also contact us (service@leadrp.com) to sign a NDA before sending any design files to us. If it prompts that the file format does not support uploading, please compress the file into a zip file before sending it.