Sounds like an instrument hookup perhaps?
Parker Hannifin and Swagelox have a lot of fittings. A possible solution may be an elbow that has a male 1/4 inch flare fitting on one end and then flare a short 1/4 inch tube, attach with ferrel and a "B" nut and then slide a 1/4 inch inside diameter hose over the tube. An aircraft instrument shop may have what you need. Quessing at your application but perhaps this may be of some help. Aaron Martin
