Do your communication lines lose signal with the slightest pull or vibration?
Changes in weather, minor aging at the joint, or a bit of cable movement can all cause instability. The cable itself is usually fine—the weak point is always the joint.
So the real question is: is it a cable problem, or a sealing problem?

Silicone Cold Shrink Tube (EPDM) answers that clearly:
It’s the seal. And this fixes it.
Once installed, the tube shrinks tightly around the joint, restoring stability and preventing micro-movement. The long-lasting compression of EPDM reinforces both sealing and mechanical strength.