Custom Cast Molding Services
As an industry-leading contract molding provider, Jiangzhi offers high-quality cast molding services, delivering both cost and weight savings for your projects.
Cast Urethane Molding Services
We offer custom cast urethanes using durable metal molds to ensure consistent quality and dimensional accuracy. Unlike soft silicone molds commonly used in traditional urethane casting service, our metal molds support repeated use and deliver reliable performance for high-quality short-run production. Our cast urethane molding services support:
- Complex geometries and undercuts
- Varying hardness (shore A to shore D)
- Transparent or pigmented finishes
- Insert molding and overmolding
- Tight tolerance control
Our Cast Molding Capabilities
| Name | Detail |
|---|---|
| Size |
98.42in. x 78.74in. x 39.37in. 2500mm x 2000mm x 1000mm |
| Mold Cavities | Single or multi-cavity |
| Mold Life | Unlimited (We will open a new mold if the old one worn out) |
| Mold Storage | Forever |
| Mold Material | P20 Steel |
| General Tolerance | Normally +/- 0.008in.（0.2mm) |
Cast Molding Materials
Cast molding has a limitation of material selection, the most common material are as follow.
- Polyurethane
- Nylon
Custom Contract Manufacturing Capability
01
Metal Mold Setup & Surface Prep
Our process begins with preparing the high-precision metal mold for casting. Each mold is carefully cleaned and treated with a release agent to ensure smooth custom cast of urethane parts removal and consistent surface finish. With custom polyurethane molded parts manufacturers like us, this preparation ensures your parts meet exacting specifications from the very first cycle.
02
Material Selection & Urethane Mixing
We offer a wide selection of custom cast urethanes, including soft elastomers and high-performance rigid resins. Each polyurethane casting service is customized with pigment, hardness, and performance additives as needed. The urethane resin is carefully mixed and degassed under vacuum to remove bubbles—crucial for optical clarity and mechanical strength.
03
Casting, Curing & Demolding
The bubble-free urethane is poured into the mold cavity and then cured under heat or pressure depending on material type. Once cured, the part is removed and finished. Thanks to our robust tooling, we offer cast urethane manufacturing with excellent repeatability for both custom cast urethane prototypes and production runs.
04
Inspection, Post-Processing & Delivery
Each part undergoes thorough visual and dimensional inspection. We also offer post-processing options such as trimming, CNC machining, insert overmolding, or bonding—delivering complete custom cast solutions tailored to your needs. With a streamlined production workflow, we help minimize urethane casting lead time and ensure reliable delivery for both prototypes and low-volume production runs.
Advantages of Cast Molding
From product development models and prototypes to low-volume production runs, this rapid prototyping process is capable of producing parts that are highly similar in color, texture, feel and physical properties to injection-molded parts.
- Offers a wide variety of material choices such as rigid, flexible, durable, transparent, and high temperature resistance
- Offers physical properties similar to injection molded parts
- Suitable for low volume production
- Ability to re-mold an existing part or hardware using another material
Cast Molding Application
Cast molding is a manufacturing process with broad spectrum of applications, ranging from automotive and industrial components to medical devices and consumer products.
- Seals and gasket
- Urethane rollers
- Custom o-ring
- Vibration dampers
- Grommets and bushing
Urethane Cast Molding Parts in Different Industries
Jiangzhi Other Processing Services
FAQs of Cast Molding
Why choose polyurethane casting instead of 3D printing?
Polyurethane casting produces stronger, more durable parts with better surface finish. It’s cost-effective for small batches and functional prototypes, while 3D printing is slower and often less durable.
Why choose polyurethane casting instead of injection molding?
Polyurethane casting has lower upfront costs and faster lead times for small to medium runs. Injection molding is better for large volumes but requires expensive molds and longer setup.
How to choose between silicone molds and metal molds for casting?
Use silicone molds for short runs, complex shapes, and quick turnaround. Choose metal molds for higher durability, precision, and longer production runs.
Can polyurethane casting match the performance of injection molded parts?
Yes, polyurethane casting materials can closely replicate the mechanical and physical properties of many injection molded plastics, making them suitable for functional prototypes and small batch production with near-production quality.
