Complete Guide to Vacuum Casting (2025 Update)
Vacuum casting — also called urethane casting — is a manufacturing process that uses a silicone mold and polyurethane resin to produce small batches of plastic-like parts . A master model is created first, then encased in silicone to form a mold. Under vacuum , liquid resin fills the mold cavity, eliminating bubbles and ensuring smooth, accurate parts . Unlike traditional injection molding ...
Vacuum casting is a low-volume manufacturing process that uses a silicone mold and a vacuum environment to produce high-quality polyurethane resin parts . The process begins with a master model—often made by CNC machining or 3D printing—used to create a silicone mold.
Vacuum Casting Services & Custom Urethane Casting Parts
Vacuum Casting , sometimes called Urethane or Polyurethane casting , uses silicone molds and vacuum pressure to produce plastic and rubber parts with exceptional detail. Unlike traditional plastic injection molding, this vacuum casting service doesn't require expensive metal tooling, making it a faster, more cost-effective option for producing complex prototypes or low-volume runs.
This makes polyurethane vacuum casting components one of the pillars of contemporary product development as well as low-volume production. Conclusion Polyurethane vacuum casting parts are an essential component in releasing a prototype quickly, testing prototype functions, and low-volume production.
The Ultimate Guide to Vacuum Casting Materials
Vacuum casting ( polyurethane casting ) is one of the low-cost processes used to manufacture rigid or rubber-like plastic parts . Urethane casting is suitable for prototypes and certain end-use parts that don't require expensive hard molds, instead silicone molds are used to make a limited number of copies of the master model.
Premium Parts offer urethane/ vacuum casting materials that come in different types & available in several colors, transparency & translucency levels.
Vacuum Casting Service
Custom vacuum casting services for high-quality, small-batch plastic parts . Ideal for functional prototypes with production-like finishes and textures. Get an instant quote and receive parts with excellent dimensional stability.
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Guide to Vacuum Casting (Urethane Casting)
Learn about the vacuum casting process, the best urethane casting equipment, how to produce 3D printed patterns for vacuum casting , and more.