Silicone Engineering Notes
Straight answers from our extrusion floor — compound selection, wall thickness and tolerance, certification routes, and what tooling really costs. Written by the engineers who run the lines, not by a marketing team.
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Both are silicone rubber, and on a drawing they look identical. The cure system decides what leaches out of the part — and that decides whether it belongs in a food line or on a machine frame.
ID, wall and concentricity are three separate promises. Confusing them is the most common reason a tube that “meets drawing” still leaks on the filling line.
Latest technical notes
Three names that get used interchangeably in quotation emails, and three completely different tests. Here is wha…
14 Oct 2026 · 9 min read
Two tubes, same ID, same wall, 12% different flow rate. The variable was hardness — and it is usually the last t…
07 Oct 2026 · 6 min read
What a factory actually charges for, why the first quote is often the cheapest and the slowest, and how to read …
30 Sep 2026 · 7 min read
Questions about your own part?
Send a drawing or a sample. We will tell you which compound and hardness we would run, and what it costs at your volume.