The weak point of other fusion splice-on connectors occurs when the shock absorber of the stop ring is sleeved by heat shrink after fusion splicing.  Typically then, if the ferrule fiber, primary fiber, and the ferrule take a load toward the primary fiber, the fiber can be bent as shown – possibly causing a disconnection of the fiber. To resolve this problem, the SWIFT splice on connectors uses the ferrule to disperse this transformation and prevent fiber optic disconnect resulting in better connections and more reliable terminations.