The taper union extrudes each other through the inner and outer conical inclined planes to form a sealing surface. Different from normal taper Union, brass taper Union use brass for sealing surface. It has good anti-rusty.
When you buy, please make sure that this key has two male female interfaces. The union of the cone seat guarantees a better seal and ensures that your piping system does not leak. The cone seat of this union is made of copper, which will further improve the sealing.