Siptenk 1/4" Air Line Fittings 5PCS, DOT Approved PTC/PTCR & Brass Straight Union, 1/4" OD Tube Push to Connect Air Brake Line Fittings for Truck Trailers Industrial Air System

["SIPTENK AIR LINE FITTINGS: 5 PCS Straight Union Fittings for 1/4\" OD Tube.","D.O.T. APPROVED: These 1/4\" DOT air tee fittings are constructed from PTC/PTCR composite material, meeting D.O.T. FMVSS 571.106 and SAE J2494-3 standards for air hose fittings. They are compatible with SAE J844 Type A/B nylon tubing and fully satisfy air brake system requirements, ensuring reliable safety during operation.","PTC/PTCR and brass: DOT air line fittings help extend product service life, lower maintenance costs, minimize seal wear, provide excellent corrosion resistance, and enhance reliability in low-temperature environments.","QUICK PUSH-TO-CONNECT: The newer iterations of the air brake line fittings use quick connectors, which are push-to-connetc fittings, easy to use and save time for replacement.","HIGH ACCURACY NO AIR LEAKAGE: The d.o.t. air fittings are well-made, accurate in size, in a great degree to reduce the possibility of air leakage, so that you can feel more comfortable using them.","HIGH PRESSURE RESISTANCE: Max. Working Pressure: 250 PSI (17.2 bar); Temperature Range: -40°F to 200°F (-40°C to 93.3°C). These brass push-to-connect fittings perform reliably in both extreme cold and high-temperature environments.","WIDE ALLPICATION: The quick connect air hose fittings widely used for semi-trailers, trailers, buses, mobile equipment, industrial workshops and other various machinery air braking systems.","AFTER-SALES: If you have any questions about Siptenk dot air fittings, please feel free to contact us. We will do our best to help you solve the problem and ensure to provide you with a pleasant shopping experience."]