Profile: Downing Wellhead Equipment, Inc. provides new equipment manufacturing, remanufacturing and field services. We develop dual hanger assembly, downing studded tees & crosses, dual adapter flange, tubing hanger, secondary seal, casing spools and bore protectors. Our D-16 stripper rubber serves as an annular packoff and is used for running or pulling tubing. Our tubing hanger offers packing rings. Our extended neck hanger isolates the tubing head/adapter connection from well pressure and gives control line porting.