Proseal, Envirosafe Proseal. Even though Proseal can form a seal on the Schrader valve, when you hook up to it the seal will release and allow you to use the Schrader if necessary. If there is still Proseal in the system it will reseal the Schrader.
Proseal, Envirosafe Proseal, 12 cans (4oz, 113 grams)
Envirosafe Proseal XL4 for R22, refrigerant sealant, Auto A/C, 1 Can
Envirosafe Proseal and Prodry with Leak Detector for R12 Automotive Systems
Envirosafe Proseal and Prodry with Leak Detector for R12 Automotive AC Systems
Stop Leak for R12, Envirosafe stopleak, 2 cans
Envirosafe Arctic air for R12, Auto AC support with Oil, Proseal, charging gauge
