Tolerances: Papler Industry can maintain a machining tolerance of +/- 0.003 in. (0.08mm) with a linear tolerance of +/- 0.025 in./in. (0.025mm/mm).

Surface Finish Options

Quality Inspections and Finishing Options

Depending on your application's requirements, you can choose from the following when requesting a quote for your silicone rubber parts.

Quality Inspections available for on-demand manufacturing orders

Designing for Manufacturability (DFM) Feedback 

Scientific Molding Process Development Report

In-process CMM inspection and machine monitoring

First article inspection (FAI) and process capability report with GD&T

How Does Liquid Silicone Rubber Molding Work?

Due to the flexible nature of LSR, parts are manually removed from the mold, and thus, ejector pins are not built into the mold design. Like a standard aluminum tool, an LSR molding tool is fabricated using CNC machining to create a high-temperature tool built to withstand the LSR molding process. After milling, the tool is polished by hand to customer specifications, which allows six standard surface finish options.

The finished tool is loaded into an advanced LSR-specific injection molding press that is precision geared for accurate control of shot size to produce the most consistent LSR parts. Since LSR is a thermosetting polymer, its molded state is permanent—once it is set, it can’t be melted again like a thermoplastic. When the run is complete, parts (or the initial sample run) are boxed and shipped shortly thereafter.