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Background and Solution
RTV dispensing typically requires and oil bath for the dispense tip when not in use, due to the material curing over time in ambient conditions. Presence of oil on the part to be dispensed on can cause a major issue with sealing. The tip must be wiped clean of any oil prior to dispense.


Solution
We created an air knife wipe that the robot can present the tip into prior to each dispense. The knife wipes the tip, while a line vacuum ensures that all oil is pulled down into the catch filter. The filter also has a drain valve to empty the oil as needed.

Results
The tip is now free of oil contamination and can properly dispense on the part, without creating major warranty issues for engine gasket leaks.