BUYER GUIDE

LSR vs. Compression Molding

The right silicone molding process is selected from the part, material, volume and quality requirements—not from one factor alone.

A practical comparison of liquid silicone rubber and compression molding for custom silicone projects.

LSR molding

LSR can support automation, fine features and repeatable higher-volume production. Tooling and process planning are usually more involved.

Compression molding

Compression molding can suit a wide variety of silicone forms and project volumes, with a different balance of tooling, cycle time and manual handling.

How to decide

  • Annual and lifetime volume
  • Part geometry and wall thickness
  • Tolerance and flash expectations
  • Material system
  • Tooling budget and launch timing