LNGBRFECAP by Dixon Valve | Liquid Natural Gas Coupling | Cap for LNG30BRFE and LNG20BRFE | BrassFeatures: Fixed end design threads on tank truck pipe connection line, manifold, pipe outlet, or pipe connection. PTFE gasket reduces force needed to make a tight connection. Connect by hammering the acme threaded nut onto a fixed end. Hose end designed female NPT thread attached to hose end. Snap ring keeps connection nut in place for easier connecting. Hose end lugs intended to be struck with a non sparking hammer or similar non sparking device.