Custom LSR Molding & Silicone Parts Manufacturer
At LSRParts, we deliver production-ready custom silicone parts that meet your exact performance requirements from the first design review through to stable mass production. Whether you are developing a new product or scaling an existing one, our engineering support and manufacturing process ensure you receive components that are consistent, reliable, and built specifically for your application.
Why Custom Silicone Parts from LSRParts Matter
We do not supply standard rubber products. Instead, we manufacture silicone components based on your drawings, specifications, and real-world operating conditions.
Precision Engineering
Precision parts with repeatable dimensions and sealing performance that match your design intent. Every component is manufactured to your exact specifications.
Risk-Free Development
Full visibility into manufacturing risks before tooling begins, so you avoid costly late-stage changes. Our DFM reviews identify potential issues early.
Accelerated Timelines
A clear, documented path from prototype validation to high-volume output that reduces your development and production timelines significantly.
Our Typical Project Workflow
We start with your geometry, material requirements, and volume needs. The process is structured so every decision is made with your application in mind.
DFM Review
We evaluate part geometry, wall thickness, draft angles, undercuts, tolerances, and bonding requirements to identify potential issues early.
Material Selection
We recommend the silicone compound that best fits your environment — temperature, chemical exposure, medical or food-grade compliance, conductivity, etc.
Mold Design & Manufacturing
Our team designs the tool with your production volume in mind. Prototype and production tooling is built to your specifications.
Sampling & Validation
We produce T0/T1 samples for validation. Full testing and approval before moving into series production.
Mass Production
Consistent output with full traceability, inspection, and custom packaging. Whether you need 100 parts or millions per year.
Manufacturing Capabilities
We offer multiple silicone manufacturing processes to match your part geometry, volume requirements, and budget.
LSR Injection Molding
We use liquid silicone rubber injection molding to produce parts with tight tolerances and excellent surface quality.
LSR Overmolding
We combine liquid silicone rubber with plastic or metal substrates to create multi-material assemblies with strong, permanent bonding — ideal for connectors, seals, and grips requiring both flexibility and structural integrity.
Compression Molding
For larger or simpler parts, we offer silicone rubber compression molding with lower per-part tooling cost and good flexibility for complex geometries.
Silicone Extrusion
We produce custom tubing, cords, strips, and multi-lumen profiles in a wide range of sizes and cross-sections.
Tooling Capability
We support every stage of tooling development so you receive the right tool for your volume and timeline.
Key Highlights
- ✓DFM and mold flow review supported
- ✓3-axis / 5-axis CNC, sinker & wire EDM
- ✓Rapid aluminum tooling: 100–10,000 cycles
- ✓Prototype tool lead time: approx. 10–12 days
- ✓Production tool lead time: approx. 3–6 weeks
- ✓Surface finish Ra 0.8 μm or better
Tool Steel Options
Secondary Operations
We perform a full range of post-processing steps in-house so your silicone parts arrive ready for assembly.
Material Options
We stock and formulate a wide range of silicone compounds to match your application environment.
General Purpose LSR
Industrial / electronics
Medical Grade LSR
Medical devices
Food Grade LSR
Food / beverage / baby
Platinum-Cured Silicone
Medical / food contact
Optical LSR
Optical / lighting
Fluorosilicone
Automotive / fuel / chemical exposure
High-Temperature Silicone
Automotive / industrial
Low-Temperature Silicone
Outdoor / automotive
Electrically Conductive
Electronics / EMI
Thermally Conductive
Thermal management
Flame-Retardant
Electrical / automotive
Custom Compounds
Application specific
Get Your Custom Silicone Part RFQ
To receive a detailed quote with material recommendations, estimated lead times, and pricing for your specific part, upload your 3D file, CAD drawing, or technical requirements. Our engineering team will review the design and provide a complete quotation within 48 hours.
What you get with your RFQ:
- Free DFM feedback on new projects
- Fast turnaround for prototype samples
- Long-term supply agreements for high-volume parts
Upload your drawing or description now and take the next step toward reliable, custom silicone components that support your production schedule.
Ready to start your project?
Contact Our Engineering Team