When buying a certain durometer of silicone from the manufacturers, what durometer are you getting?

Question: When you buy a certain durometer of silicone from the manufacturers, what is the actual durometer are you getting?

Answer: Silicone is a very useful material that has been widely used in both non-medical and medical application for decades. For example, silicone has a wide range of operational temperatures (between -150 °F and -600 °F). Moreover, silicone has another interesting property that enables it to be widely used. It has a wide hardness range without additional additives. Shore A scale is typically used to identify the silicone’s hardness and liquid silicone rubber (LSR) is typically available from 01 to 80 durometers (typically in increments of 10 durometers).  Nevertheless, there is a variation in hardness when you buy silicone from the manufacturers. The industry standard tolerance for silicone is ±5 durometers. This is due to the variation in the vinyl gums and treated filler used to make them plus the ±2 potential test error in determining the durometer. As a result, you normally don’t get the exact durometer of silicone as listed from the manufacturers; you only get a range of durometers that is close to the desired durometer.

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About Hean

Prior to joining Albright Technologies, Hean was an intern and a part-time employee at Berry Plastics. After starting at Albright Technologies in May 2011 as an intern, he recently became a full-time employee as a Project Engineer in Training. Currently his responsibilities include, designing molds, programming codes for tools, inspecting articles, setting up a LIM machine and anything else that helps the team move forward. Hean received his Associates degree in Liberal Arts and a concentration in Physical Science from Middlesex Community College in 2008, and a Bachelors degree in Plastics Engineering with a business minor from UMass Lowell in 2011.