A device and method is provided for separating heavier and lighter fractions of a fluid sample. The slip is mounted over the hanger body and has an internal profile that nests within a mating profile on the exterior of the hanger. The resistance of each flow path within the hydraulic cylinder is manually preset. Therefor, the invention provides for the use of particular crosslinking agents consisting of hydrogenated POS comprising at least three hydrogen atoms bound to the silicon located at chain end and in the chain. As a result, the interconnection area can be reduced, and fine, high-density semiconductor integrated circuits can be fabricated. Each pair of the connectors are fitted into the inner ends of two neighboring fence rods, and are overlapped together to be connected to each other at a predetermined angle.