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E-Type 4-Layer A10/A20 Air Conditioning Rubber Hose（R134a and HFO-1234yf refrigerants）
A 4-layer SAE-certified A/C hose for modern vehicle air conditioning systems using R134a and HFO-1234yf refrigerants.
E-Type 4-Layer A10/A20 Air Conditioning Rubber Hose
Produced in E-type 4-layer construction (models A10 and A20) and compliant with SAE J2064E, QC/T664-2019, and SAE J3062. The four-layer structure — inner PA barrier, inner EPDM rubber, PET/PA reinforcement, and outer EPDM/CSM cover — delivers very low refrigerant permeation, high burst strength, and stable performance across a working temperature range of -40°C to +135°C. Supplied in 100 m and 50 m packaging. Suits both OEM assembly and aftermarket A/C service.
Applications:
✅Passenger Vehicle A/C: OEM and aftermarket climate-control lines for R134a / HFO-1234yf systems
✅Commercial Vehicle A/C: Heavy-duty trucks, buses, and coach air conditioning
✅Aftermarket Service: Replacement hoses for low-permeation A/C retrofit and repair
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