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UV cure gasket compounds have many production floor advantages that often have to be weighed carefully against their raw material costs. The UV cure process makes these materials immediately able to be handled and even boxed for shipment. Moisture cure RTVs can take hours or even days of rack time to cure. UV cure materials are process friendly - there are no solvents (VOCs) to flash off, moisture cure issues to deal with, or short pot life issues such as with epoxies. This means that short of exposing the dispense nozzle to sunlight (or UV from a cure system), your dispense tip should never cure. A hidden benefit of these materials is that some of them have minimal rheological variations due to temperature. Materials should always be checked for their performance throughout the expected temperature range that is found on the factory floor. If too much variation is found, it is often necessary to either heat or cool the material to achieve consistent dispense performance. Listed below are several sensors that help ensure consistent results and a slip coat application used in cases where the natural grip-tion of a rubber gasket is unacceptable and more slip-tion is needed!
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