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Polyurethane Cast Molding

Urethane casting is a cost-effective choice for producing multiple prototypes with production-grade material performance or low-volume production parts. Flexiparts is a custom polyurethane molding manufacturer, producing both prototypes and functional cast PU parts of all sizes.
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What is Urethane Casting?

Urethane casting, also known as polyurethane casting or cast molding, is a versatile manufacturing process. It entails producing top-quality prototypes and low-volume production components by pouring liquid urethane material into molds to form objects. This technique is employed to craft a wide range of items, from small-scale prototypes to intricate parts.

Liquid polyurethane is poured into an open mold and cured in an oven or on a heated table. Because no high-pressure tooling is required, casting suits parts of almost any size and is especially advantageous when conventional tooling would be costly or unfeasible.

Cast Urethane Molding Working Process

Our cast urethane molding process is carefully controlled at every stage to ensure consistent quality, dimensional accuracy, and reliable performance. The manufacturing process typically includes the following steps:
01

Mold Creation for Precision

We begin by crafting a mold designed to perfectly replicate the desired part, ensuring all intricate details are captured accurately.
02

Expert Material Mixing and Pouring

Our skilled technicians masterfully mix and pour polyurethane molding material, ensuring it fills every cavity for a flawless part.
03

Curing for Quality

During curing, the material solidifies, acquiring the intended shape and unmatched quality. Depending on part size, curing takes place in an oven or on a heated table.
04

Careful Demolding and Refinement

After curing, we expertly demold the part, then apply meticulous finishing touches for a refined, high-quality product.
Polyurethane Cast Molding

Urethane Casting Options

Urethane casting is a highly versatile process that allows for the precision creation of customized parts. We specialize in providing tailored solutions to meet your unique requirements. With a wide range of color options, customizable finishes, versatile resins, and value-added extras, our focus is on delivering precision and customization to bring your projects to life.
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Versatile Color Options

Choose from a wide array of colors to suit your project's aesthetics. We also offer the option for customers to provide color samples for exact color matching.
surface treatments

Custom Surface Finishes

Achieve the exact texture and finish you desire for your parts. Our urethane casting process allows for precise customization of mold textures like SPI, VDI.
overmolding

Material

Unlike CNC machining, urethane casting has limitations on material compatibility. Our urethane casting capabilities encompass rigid materials in Shore D and elastomeric options in Shore A resin.
Value-added

Value-Added Options

We offer value-added options such as spray painting, pad printing, screen printing, assembly, and more to meet additional requirements for your parts.

Application and Examples of Urethane Casting

Urethane injection molding parts is a versatile process employed in various industries, offering tailored solutions for a wide range of applications. We have extensive experience in urethane casting, serving diverse sectors with precision-engineered solutions.
Automotive Parts
Custom Gaskets: Urethane casting is utilized to create custom gaskets, ensuring reliable sealing in automotive applications . Interior Trim: Interior trim components, such as dashboard parts and door handles, benefit from urethane casting for intricate designs.
Electronics Enclosures
Prototypes and Housings: Urethane casting enables the rapid production of prototypes and housings for electronic devices. Button Panels: Complex button panels with unique textures and finishes are efficiently manufactured using this method.
Consumer Products
Consumer Electronics: The casing for consumer electronics, such as remote controls and smart devices, is manufactured using urethane casting. Toys and Collectibles: Urethane casting enables the creation of detailed and durable toy and collectible components.
Industrial Equipment
Equipment Handles: Ergonomic equipment handles with non-slip surfaces are efficiently produced using this method. Wear-Resistant Components: Cast urethane is ideal for wear-resistant parts such as polyurethane rollers, wheels, bumpers, mounts, seals and liners.

Custom PU Products We Made

We specialize in urethane molding and the cast urethane molding process, delivering high-quality cast polyurethane parts for various industries. Our custom urethane molding services ensure precise, durable, and flexible urethane molded parts, tailored to your needs. From polyurethane custom molding to producing complex cast urethane parts, we turn your designs into reliable components.
PU Wheel

Polyurethane Wheel

Polyurethane Seals

Urethane Seal

Polyurethane Mount

Polyurethane Mount

PU Bushing

Polyurethane Bushing

Polyurethane Screen

Polyurethane Screen

PU Roller

Polyurethane Roller

PU Bumper

Polyurethane Bumper

PU Liner

PU Liner

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FAQ About Urethane Parts

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More Questions

Urethane casting pours liquid polyurethane into an open mold, so it suits prototypes, low-volume runs and large or complex parts where conventional tooling would be costly. Injection molding uses a sealed mold and suits projects where size, shape or tooling makes other methods impractical. Compression molding cures polyurethane in a press and is well suited to precise, repeatable components. Send us your drawing and we will recommend the best fit.

We use durable metal molds for urethane casting, which are ideal for larger production runs. Depending on the resin type and part complexity, each mold can produce 10w+ high-quality parts, ensuring consistent performance and efficiency for batch production.

Depending on the complexity and quantity, lead times usually range from 3 days to 2 weeks for prototypes, and up to a few weeks for small production batches.

Yes! We provide a range of finishing services for urethane casting parts to meet your design and functional needs. Our team can sand, polish, paint, plate, or apply specialized coatings to achieve the exact color, texture, and appearance you

Polyurethane is resilient, durable, cost effective, abrasion resistant and impact resistant. It also resists chemicals and oil, absorbs vibration and shock, and is non-absorptive and non-conductive, which makes it a versatile choice for wheels, rollers, bumpers, mounts and seals.

Additional Molding Processing Method

At Flexiparts, we offer a range of manufacturing processes to support different product structures, performance requirements, production volumes, and cost targets. By combining suitable processing technologies with engineering support, we help customers achieve more efficient production and reliable part performance. Our available manufacturing capabilities include:

Compression Molding

PU is injected into a sealed mold, an ideal option when compression molding is impractical because of part size, shape or tooling configuration.

Injection Molding

Polyurethane is injected into a sealed mold, an ideal option when compression molding is impractical because of part size, shape or tooling configuration.

Overmolding

We integrate materials seamlessly to achieve functional and aesthetic results.

Insert Molding

We ensure strong bonding and accurate placement of inserts in each part.

Extrusion Molding

We create continuous profiles and tubing with consistent cross-sections, ideal for high-volume production.

CNC Plastic Machining

We use multi-axis CNC equipment to achieve tight tolerances and complex geometries.