Although many techs know (or suspect) this, it may surprise DIYers to know that service port caps are THE primary seal for a vehicle’s A/C system’s service ports.  Many erroneously believe the Schrader valve provides the seal for the ports,
Air Conditioning Products, Tools, Equipment Power Division
Although many techs know (or suspect) this, it may surprise DIYers to know that service port caps are THE primary seal for a vehicle’s A/C system’s service ports.  Many erroneously believe the Schrader valve provides the seal for the ports,