Royal Brass & Hose provides a complete selection of gaskets & seals to ensure leak-free connections in mobile air conditioning systems. Our inventory includes R134A O-rings, sight glass O-rings, compressor head seals, and A/C O-ring assortments, designed for maximum durability and performance. These sealing components are essential for trucks, A/C hose fittings, and other heavy-duty applications, preventing refrigerant leaks and system failures.