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Vacuum Casting Rubber Parts Prototypes
Vacuum casting is a highly efficient process used to produce rubber-like parts by replicating a master pattern into a silicone mold, then injecting liquid polyurethane or elastomer materials under vacuum conditions. This ensures bubble-free casting, excellent surface fidelity, and accurate reproduction of complex geometries such as undercuts, thin walls, and soft-touch structures. It is widely used as a bridge between prototyping and low-volume production.
- Tolerance: ±0.2 mm
- Surface Roughness: Ra 0.8 / 1.6 / 3.2 / 6.3 (customizable)
- Lead Time: 5–7 days (prototypes), 10–20 days (low volume)
- Drawing Formats: CAD, DXF, STEP, IGES, PDF
- Materials: PP
- Surface Finishes: Polishing, Sandblasting, Painting, Silkscreen printing
- Price: Based on drawing and quantity
- Supply Capacity: Up to 5,000 pcs/month
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At KT TOOL, we specialize in precision rapid manufacturing and low-volume production solutions, supported by advanced CNC machining, SLA 3D printing, and industrial vacuum casting systems. With over a decade of engineering experience, we focus on delivering functional prototypes and end-use rubber components with tight dimensional control, stable repeatability, and production-grade surface quality for global customers across automotive, medical, electronics, and industrial sectors.
Vacuum casting is a highly efficient process used to produce rubber-like parts by replicating a master pattern into a silicone mold, then injecting liquid polyurethane or elastomer materials under vacuum conditions. This ensures bubble-free casting, excellent surface fidelity, and accurate reproduction of complex geometries such as undercuts, thin walls, and soft-touch structures. It is widely used as a bridge between prototyping and low-volume production.
| Parameter | Details |
| Production Service | 3D printing, Vacuum Casting, CNC Machining, CNC Turning, CNC Drilling, CNC Milling, Sheet Metal Stamping |
| Available materials | PEEK, ABS, PC, PA, PTFE, PBT, POM, PMMA, Silicone,etc. |
| Service type | Rapid Prototype Service, CNC Service, Plastic CNC service, Metal CNC Service |
| Surface Finishes | Polishing, Sandblasting, Painting,Silkscreen printing,etc |
| Drawing format | CAD, PDF, DWG, IGS, STEP |
| Quality control | Full inspection before delivery |
| Tolerance | ±0.2mm |
| Shape | Customized Shape |
| Color | Custom color as per customer requirement |
| Lead time | 5-10 days for prototypes manufacturing |
Process
- CAD Design Preparation – Validate geometry and function requirements
- Master Pattern Creation – CNC machining or SLA 3D printing
- Silicone Mold Fabrication – Multi-layer mold replication for accuracy
- Vacuum Casting – Resin injection under vacuum for bubble-free parts
- Curing & Demolding – Controlled solidification and part extraction
- Finishing & Inspection – Trimming, surface treatment, full QC check
- Repeat Production – Stable replication for batch consistency
Advantages of KT TOOL Vacuum Casting
- High replication accuracy for complex rubber geometries
- Production-grade surface quality from master pattern fidelity
- Fast tooling cycle compared to injection molding
- Flexible material simulation for functional testing
- Cost-efficient low-volume manufacturing without hard tooling
Applications
Vacuum casting rubber parts are widely used across industries where flexibility, sealing performance, and functional validation are required:
- Aerospace: functional testing components and soft assemblies
- Automotive: seals, gaskets, interior soft components
- Medical Devices: flexible housings, grips, testing enclosures
- Consumer Electronics: protective covers, wearable device parts
- Industrial Equipment: vibration dampers, custom seals
