I purchased and installed a ProSeal Air Filter gasket on my KTM 350 EXCF because I hate dealing with grease. I have ridden with it installed for a year I’m dusty deserts and forests and it has worked perfectly. I just upgraded to a KTM 500 EXCF and it was the first upgrade I performed. Goodbye grease.
PC Racing customer service is also top notch.
I would highly recommend this product. It seals securely and is simple to install.