The Silea couplers are designed to use in the petrochemical industry to fulfill the requirements of dry coupling. It is quite safe to use, because it is designed according to the regulations of API RP 1004 standard. You will get 4” TTMA flange with it that is constructed with the aluminum alloy. The surface is durable to avoid any wear and tear. The standard fluoroelastomer (Viton®) seals make it easy to maintain the couplers. It is quite safe to use for different operations to avoid spillage.