LSR Injection Molding for Custom Silicone Parts
Temco Rubber provides LSR injection molding for custom silicone components used in OEM and industrial applications. We support projects from DFM review and mold development through first samples and repeat production.
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LSR Injection Molding Capabilities
The manufacturing approach is developed around part geometry, silicone material requirements, mold design and expected production volume.
DFM Review
Geometry, wall sections, critical dimensions and demolding considerations are reviewed before tooling.
Custom Tooling
Tooling strategy is developed around cavity layout, venting, gate location and production requirements.
Material Selection
Hardness, color and application-specific LSR grades are reviewed according to project requirements.
Repeat Production
Process development supports recurring OEM production after tooling and initial sample validation.
Liquid Silicone Rubber Injection Molding Process
LSR injection molding uses a two-component liquid silicone material system. The components are metered and mixed before the material enters the injection unit and is delivered into a heated mold.
The material cures inside the cavity and forms the final silicone component.
- Metered two-component material delivery
- Controlled mixing and injection
- Heated mold curing
- Repeatable production process
- Suitable for selected complex silicone geometries
When LSR Injection Molding Is a Good Fit
Process selection should be based on actual part design, material, tooling strategy and expected production requirements.
Precision Geometry
Useful for silicone parts with detailed molded features.
Repeat Production
Suitable for recurring OEM production programs.
Automated Processing
Supports automated metering, mixing and injection.
Small Components
Can be appropriate for small precision silicone parts.
Complex Cavities
Suitable for selected detailed mold geometries.
OEM Programs
Supports tooling, validation and repeat manufacturing.
LSR Material Selection
Material selection should reflect functional, environmental and documentation requirements.
Hardness Selection
Shore A hardness can be selected according to flexibility and mechanical requirements.
Color & Appearance
Color and translucency requirements can be reviewed.
Application Conditions
Temperature and media exposure should be considered.
Material Documentation
Project-specific documentation can be reviewed before production.
LSR Mold Design & DFM Review
Successful LSR injection molding starts with a mold designed around the behavior of liquid silicone.
Gate location, venting, parting lines, cavity layout, shrinkage and demolding strategy should be reviewed before tooling begins.
Engineering review before tooling helps identify avoidable geometry and mold risks earlier.
For broader molded silicone projects, explore our custom silicone parts manufacturing capabilities.
Submit Your LSR Design
Typical LSR Molded Part Applications
LSR can support a wide range of custom silicone component geometries.
Custom Silicone Seals
Molded sealing components for OEM assemblies.
Diaphragms & Membranes
Flexible molded components requiring controlled geometry.
Precision Silicone Parts
Small detailed components for industrial assemblies.
Keypads & Interfaces
Silicone interface parts with detailed molded features.
Overmolded Components
Selected silicone-to-substrate applications can be reviewed.
Custom OEM Components
Parts developed from drawings, CAD models or samples.
Why Temco Rubber for LSR Projects?
We approach silicone molding as an engineering and manufacturing project.
Engineering Before Tooling
Geometry and tooling considerations are reviewed before mold manufacturing.
First Samples Before Repeat Production
Initial parts allow key geometry and production assumptions to be reviewed.
Built Around Your Application
Material, tooling and process decisions are developed around actual requirements.
More Custom Silicone Manufacturing Capabilities
LSR injection molding is one of several manufacturing approaches available for custom silicone components. Explore our custom silicone parts manufacturing capabilities for related OEM projects.
Frequently Asked Questions
What is LSR injection molding?
LSR injection molding uses two liquid silicone components that are mixed and injected into a heated mold.
Is silicone injection molding the same as LSR molding?
In many applications, silicone injection molding refers specifically to Liquid Silicone Rubber injection molding.
When should LSR be used instead of compression molding?
The choice depends on geometry, volume, material and tooling strategy.
Can Temco Rubber manufacture custom LSR parts from a drawing?
Yes. Projects can be reviewed from drawings, CAD models or physical samples.
What information should I provide for an LSR quotation?
Send your drawing or CAD model, expected quantity, silicone hardness and application requirements.
Planning an LSR Injection Molding Project?
Send your drawing, CAD model, physical sample or technical requirements. Our team can review geometry, material selection, mold design and production approach.
Request an LSR Project Review