MSF female couplings can be used for connecting round fittings. The Installation method is identical for both gasketfitted or bare ends. The female end is pressed over the end of a bend, T-piece, damper or reducer and fastened with selfdrilling screws or rivets. Joints provided with gasket fittings require no additional sealing. If no gaskets are provided, it is best to seal the joint with a sealing tape.