Product Details

  (1) R454b Refrigerant, 8 oz. with STOP-LEAK, Systems Leak Sealer 4 oz. R454b Refrigerant 4 oz. Stop-Leak Sealer  1/4" male flare hose connection and internal valve core for "self-sealing". * Can be used to stop leaks in R454b systems. * Forms a hard seal on metal, schrader valves, o’rings, gaskets, a/c condensers, evaporators, line sets and solder joints * Repairs minor leaks in home, heat pump, large auto, and industrial applications * One application will normally repair a leak in system from 1.5 to 5 tons or 18,000 to 60,000 BTUs. * Even though the Stop-Leak 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 Stop-Leak in the system, it will reseal the Schrader. A hose with a valve core depressor is required in order to dispense the refrigerant from this can. We also sell a Part# SF5050 valve for better control of the refrigerant outlet fitting. Enter "SF5050 in search box. Refrigerant R454b is a mildly flammable low global warming potential (GWP) hydrofluoroolefin-based refrigerant to replace R410a in new equipment designs. R-454B, also known by the trademarked names Opteon XL41, Solstice 454B, and Puron Advance, is a zeotropic blend of 68.9 percent difluoromethane (R-32), a hydrofluorocarbon, and 31.1 percent 2,3,3,3-tetrafluoropropene (R-1234yf), a hydrofluoroolefin. Because of its reduced global warming potential (GWP), R-454B is intended to be an alternative to refrigerant R-410A in new equipment. R-454B has a GWP of 466, which is 78% percent lower than R-410A's GWP of 2088. R-454B is non-toxic and mildly flammable, with an ASHRAE safety classification of A2L.  In the United States, it is expected to be packaged in a container that is red or has a red band on the shoulder or top. History The refrigeration industry has been seeking replacements for R-410A because of its high global warming potential.  R-454B, formerly known as DL-5A, has been selected by several manufacturers, including Mitsubishi Electric, Carrier, Johnson Controls, and others. R-454B was developed at and is manufactured by Chemours.  Carrier first announced introduction of R-454B in ducted residential and light commercial packaged refrigeration and air conditioning products in 2018, with R-454B-based products launches starting in 2023. Related refrigerants R-454B is not the only blend of R-32 and R-1234yf to be proposed as a refrigerant.  Other blends include R-454A (35 percent R-32, 65 percent R-1234yf) and R-454C (21.5 percent R-32, 78.5 percent R1234yf).  There are also several blends that include a third component.