They also can't get stuck and lock harder as pressure increases, yet they still have flex to allow for engine movement. Linder Power Systems has tested them to 160psi without failure, and are very proud of the design and aesthetics. Available now in 2", 2.5", 3", 3.5" and 4" inner diameter and black or purple finish.
Note: When fabricating a system with AlphaLoc couplers make sure they will not be put in a mechanical load by movement of components. Also take care to not overheat and anneal the ferrules with the pins in them. We recommend welding about an inch and letting cool then repeat. If the ferrules are annealed the pins can elongate their holes and the couplers can leak or fail.