A new valve seal solution from Advantage PressurePro uses a two-piece valve seal system that includes a hard plastic depressor and a rubber O-ring. In the Sensor Seal technology, the depressor rests on a surface just below the threads to more fully depress the valve and provide a hard stop during installation, which the company says prevents over tightening of the sensor against the rubber sealing surface and damage to the seal. The O-ring, which is pushed into place over the plastic depressor, helps endure repeated loosening and installation.