Update from Cubewano
I just spoke to Cubewano regarding the ceramic apex seals used in their UAV engines. After 250 hours run time they could not measure any wear at all to the apex seals. Measurements were taken in a temperature controlled room using a digital micrometer. Not even 0.0001", a tenth of a thou, was noticed. The seals are run on Nikasil housings. This is really quite an amasing result and we are very pleased to be working with Cubewano on their rotary engine power plants for UAV's.
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