Silicone ZipSeal Models & Available Sizing - buy replacement parts here DUI Silicone ZipSeals Q & A Q. Are all silicone seals the same? A. No – DUI uses a proprietary blend and diver tests demonstrate that DUI Silicone ZipSeals are more durable than other silicone seals on the market. Q. Can I use DUI’s new Silicone ZipSeals on my DUI drysuit? A. Yes – mostly YES : All DUI drysuits currently fit with a neck ZipRing YES: All DUI drysuits fit with a Generation 2 wrist ZipRing – these are suits from mid 2009 and newer. The ring does NOT have a seam in the center (see photo below). NO: All DUI drysuits fit with a Generation 1 wrist ZipRing – these are suits from mid 2009 and older. The ring has a small seam in the center (see photo below). If your suit is NOT fitted with DUI ZipRings or if your suit has a Generation 1 wrist ZipRing*, you can have your DUI drysuit retrofitted through DUI’s Service Department.