Chengxin Silicone Rubber · Engineering and application insights

Silicone Rubber Knowledge

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Measurement, Quality and Procurement2026-10-15

Shore A Versus Shore OO for Silicone: Why Direct Conversion Fails

Different hardness scales use different test systems. A converted value is not a direct finished-part measurement; empirical relationships …

Measurement, Quality and Procurement2026-10-15

A consistent preinspection state improves comparison, but conditioning must follow the agreed product and method. Do not alter temperature …

Measurement, Quality and Procurement2026-10-15

An acceptable batch mean can hide persistent cavity differences. Group data by cavity and period before discussing overall statistics.

Measurement, Quality and Procurement2026-10-15

Finding no defects does not prove a defect-free lot. Under explicit sampling assumptions, a probability model describes evidence strength; …

Measurement, Quality and Procurement2026-10-15

Apply agreed precision, rounding and uncertainty rules to borderline dimensions. Do not choose favorable decimal places after seeing result…

Measurement, Quality and Procurement2026-10-15

Free-state warpage and compressed sealing contact are different evaluations. Define appearance, installability and function separately; han…

Measurement, Quality and Procurement2026-10-15

Insertion force and position on a taper gauge or mandrel can stretch a small ring. Define whether the result represents functional fit or f…

Molding, Tooling and Finishing2026-10-15

Cleaning changes the process. Check residue, tool positioning and part surfaces before resuming production; a shinier mold does not remove …

Measurement, Quality and Procurement2026-10-15

A soft bore can expand around a pin. Define insertion force and state; pushing a gauge through does not establish free bore size or reliabl…

Molding, Tooling and Finishing2026-10-15

Define the process state in which drawing dimensions apply. Do not mix pre- and post-treatment readings; base tool corrections on the agree…