Minnesota Rubber's sealing diaphragms are made out of injection-molded silicone rubber, as opposed to regular millable gum processes. They are made for applications that have varying temperatures and demand resistance to aging, such as pneumatic gauges in cars and trucks. They are good insulators and resist UV radiation and weathering. The ASTM DZZ40 grades have silicone rubber properties of shore A of 20-80 and the ASTM D412 grades have a tensile strength of 1150-1750 psi. They resist heat up to 180 C and are flexible down to -45 C. The molding process has no material pre-processing, and molded parts have little gate or flash waste. The rubber's repeatable, short cycle times and less or no secondary operations make for fewer manufacturing steps, and therefore less labor content.
In his keynote address at the RAPID 2015 conference last week, Made In Space CTO Jason Dunn gave an update on how far his company and co-development partner NASA have come in their quest to bring 3D printing to the space station -- and beyond.
On Memorial Day, Americans remember the sacrifices the US armed forces have made, and continue to make, in service to the country. All of us should also consider the developments in technological capabilities and equipment over the years that contribute to the success of our military operations.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.