R1234yf Enviro-Safe ProSeal for R1234YF, 3 oz. Can Automotive Applications
R1234yf Enviro-Safe ProSeal for R1234YF, 3 oz. Can Automotive Applications. Even though Proseal for R1234YF 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.