Teledyne Hanau Pneumatic oil flask press machine for dental laboratory use was repaired last night, that has been in out of order for few weeks because of oil leak, only center bolt thread was utilized for temporal convenience losing original physical performance. This kind of machinery is easily changed into void if oil pressure was lost. The performance of a small nitrile rubber oil ring must be destroyed after some interval of use, as long as 20 years!
Replacing 2 pieces of tiny O shape rubber lings could solved the problem, but full overhaul was required in order to check any crogged material, to know it's oil garally and also to know bubble removing plug. As the last step of this kind of oil pressure circuitry, removing bubble is indispensable even if it is small amount, also as the same as brake oil caliper control in a car.
It is often the case that an original performance is lost just because of rubber sealing in an expensive factory machinery, same is said on our vehicles. We should continue our factory machineries once obtained until all the performance in every portion are lost.
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