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Urethane Casting Process

Polyurethane & Silicone Casting

Low Pressure RTV Molded Parts

How does the casting process work?

SLA is among the most precise forms of 3D printing, capable of producing layers as thin as 10 microns and achieving resolutions of 25 microns or less. Industrial SLA printers are typically more accurate than desktop versions, with a typical dimensional accuracy of ±0.2%, down to ±0.13 mm (±0.005").

(TDS available upon request)

Precision

Precision Model Resin delivers high accuracy and fine details with over 99% within 100 μm.

Clear

Clear Resin offers transparency and strength, with a smooth, polishable surface.

Grey Resin

Grey Resin offers fast printing, high accuracy, and a finish rivaling injection molding

Biomed White

BioMed White Resin: Rigid, biocompatible, suitable for skin, tissue, and bone contact.

Elastic 50A

Elastic 50A bends, stretches, and compresses, returning to shape without tearing.

Tough 1500

Tough 1500 Resin: Resilient, skin-safe, ideal for flexible, durable prototypes.

Fabrication Versatility

Our polyurethane and silicone casting services offer broad versatility, accommodating projects with diverse Shore hardness requirements, from Shore A to Shore D. Conductive, UV resistant, and impact resistant materials available. 

Days to First Article

Need parts quickly? Our 7-10 day lead time for cast parts helps you meet urgent deadlines, delivering production level parts for evaluation, sooner. 

ISO Certified

As an ISO 13485 and 9001 certified company, we ensure strict adherence to record-keeping, material certifications, ROHS compliance, and FA documentation.

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No Minimum

No minimum order required for silicone prototypes or proof-of-concept parts. We’ve completed projects from military components to custom medical and scientific seals and gaskets.

Urethane Cast device housing

Medical Prototypes

At Mina Product Development we specialize in RTV silicone molds and cast urethane products for the medical & science industries. Cast urethane products are nearly identical to their injection molded counterparts, can be color matched, and will save you thousands on tooling. 

  • Cast urethane provides quality parts at low to medium volumes

  • Custom Colors and Finishes

  • Ability to fabricate complex designs and features

Urethane Cast Products

Low Volume Production

Consumer Products for production and prototyping purposes. 

Urethane cast devices for military

Wide Variety of Applications

Fit and Function, Proof of Concept, Sales Models

Medical Products through manufacturing

Quick Turn

Dependent on part complexity, first articles in as short as 10 days.

Urethane Casting

How it Works

(Poly)Urethane casting is a method of manufacturing custom parts that are made by injecting urethane into a silicone mold. Molds are made by 3D printing a master pattern(s), then using those patterns to create cavities which we then pour silicone or urethane into. 

What Can You Make?

You can urethane or silicone cast almost any shape in our custom molds. We have fabricated fully functioning medical prototypes to clear overmolded components used for military and scientific applications. 

Silicone and Urethane Parts

500 Terry Francois Street, San Francisco, CA 94158

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