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. If there is still Proseal for R1234YF in the system it will reseal the schrader.
Arctic Air for R1234yf, oil charge, stop leak for R1234yf, R1234 Support
Envirosafe Arctic Air for R1234yf, 6 Cans and Gauge, r1234, r1234yf
Arctic Air for R1234yf, 3 cans with Gauge, COLDER AIR, Enviro-Safe
Arctic Air for R1234yf, 4 cans with Gauge, COLDER AIR, Enviro-Safe
Arctic Air for R1234yf, 1 can, COLDER AIR, Enviro-Safe, RH Thread
Arctic Air for R1234yf, 1 can 4oz. COLDER AIR, Enviro-Safe
