Custom Silicone Mold Manufacturing & Tooling
Temco Rubber manufactures custom tooling for silicone molding, including molds for HCR compression, transfer, and LSR injection processes. This page focuses on mold design, cavity engineering, machining, sampling, and production tooling. If you need finished molded silicone parts rather than tooling, use our silicone parts manufacturing service.
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Silicone Mold Manufacturing Portfolio
A selection of silicone mold tooling formats for compression, transfer, and LSR injection projects, including single- and multi-cavity production tooling.
Precision LSR Injection Molds
HCR Compression Silicone Molds
Multi-Cavity CAD/CAM Tooling
Application-Specific Silicone Tooling
Advanced Silicone Mold Manufacturing Technologies
We design and machine custom silicone molds tailored for both Liquid Silicone Rubber (LSR) injection and High Consistency Rubber (HCR) compression molding.
Liquid Silicone Rubber (LSR) Cold Runner Molds
LSR mold design can include cooled runner systems, valve-gate concepts, venting, and cavity layouts selected around the part geometry, silicone system, dimensional requirements, and expected production volume. The tooling approach is reviewed project by project before machining.
- Cold-runner concepts can reduce runner waste where the system permits
- Surface finish and polishing are selected for the part's functional requirements
- Automation requirements are evaluated against project volume
- Regulated applications require material-specific validation
High Consistency Rubber (HCR) Compression Molds
For HCR silicone, compression and transfer molds can be designed with parting lines, vents, land areas, cavity layout, and steel selection matched to the part geometry and press process. Dimensional targets and deflashing requirements are defined during DFM and sample approval.
- Economical mold making setups for low-to-medium series production
- Accommodates high durometer and heavy-duty industrial silicone parts
- Parting-line and vent design help control flash against agreed criteria
- In-house hardened steel plates resist wear during long production runs
Silicone Tooling Design Considerations
Silicone mold engineering must account for the selected material system, part geometry, cure method, shrinkage behavior, venting, and demolding strategy.
Process Compatibility
Tooling geometry and temperature control are developed around the selected HCR or LSR molding process.
Shrinkage & Dimensional Planning
Shrinkage allowance and dimensional targets are reviewed using the selected silicone compound, part geometry, and agreed tolerance requirements.
Parting Lines & Demolding
Parting-line placement, undercuts, draft, and release behavior are considered so the molded silicone part can be removed consistently.
Venting & Cure Strategy
Vent locations, cavity fill, cure conditions, and sample feedback are reviewed as part of the tooling-development process.
Our Silicone Mold Tooling Mechanism
A controlled tooling workflow from CAD review and cavity planning through machining, mold trials, sample evaluation, and production release.
Product CAD Design
Analyzing 3D CAD models for draft angles, wall thickness consistency, and parting line placement.
Shrinkage Calculation
Applying compound- and geometry-specific shrinkage allowances to the cavity dimensions before tooling approval.
CNC & EDM Tooling
High-speed CNC milling and EDM wire spark erosion of hardened mold steel cavities.
Mold Trial & Baking
Conducting mold trials and reviewing sample dimensions, release behavior, surface condition, and agreed functional requirements.
This Page Is for Silicone Mold Tooling
Use this hub when you need a mold or production tool for silicone molding. If your requirement is finished molded silicone components, the Silicone Parts hub is the correct commercial page.
Selected Silicone Mold Projects
Published tooling examples from the Temco Rubber portfolio.
Silicone Rubber Pad Mold
A published silicone tooling project for a molded pad component.
View project →
Silicone Watch Mold
A published mold project for a custom silicone component geometry.
View project →
Washer & O-Ring Mold
A published silicone mold example for sealing-component production.
View project →Frequently Asked Questions
Technical answers about silicone mold design, HCR and LSR tooling, shrinkage planning, mold trials, and production tooling.