E-Series DC coils with integral connectors meet or exceed all IP69K standards for thermal shock, weather resistance and “dunk capability” under demanding environmental conditions encountered in mobile and off-highway applications. A rugged, external metal shell surrounds a seamless, completely encapsulated coil winding. No O-rings or waterproofing kits are required. Models are available to fit all standard 08, 10, 12 and 16 size cartridge valves. Recent refinements to the design and manufacture of these coils further improves their ruggedness, reliability, and installation convenience.