The Gates® Polarseal® Refrigerant Hose is constructed from synthetic rubber and reinforced with two layers of spiral polyester. It can handle pressures up to 500 psi and temperatures ranging from -22°F to 257°F. This hose is designed for liquid and gaseous R134A and R12 refrigerants in automotive and industrial air conditioning systems. It meets SAE J3062 standards for manufacturing and requires compliance with SAE J2064 for assemblies, ensuring minimized permeation of R134a refrigerant.