1/4" DOT Approved Black Airline

Boss recommends using a liquid thread sealant rather than thread tape. Small fragments of thread tape can break off, travel through the airlines and lodge in valves or valve blocks, causing them to stick open or closed. A quality thread sealant seals the threads without shedding debris.

Always cut the airline square with a sharp tube cutter, not side cutters. Push the tube firmly into the fitting until it bottoms out, then pull back gently to seat the collet. Most leaks are caused by angled cuts, scratched tube, or the line not being fully inserted.

You can often reuse fittings and lines if they are in good condition, but if the tube end is scratched, oval or has been repeatedly removed, it is safer to cut back to a fresh section or replace it. Damaged tube ends are a common source of slow leaks.

Yes, the 1/4" DOT Approved Black Airline is compatible with all Boss Air Suspension products that require 1/4" airline, ensuring reliable performance and durability.

This airline is DOT approved and meets SAE J844 standards, ensuring it is designed for safety and reliability in air brake systems, unlike some non-approved alternatives that may not meet these rigorous standards.

While the 1/4" DOT Approved Black Airline is primarily designed for air suspension systems, it can also be used for low-pressure air tools, provided the pressure does not exceed 400psi.

When cutting the 1/4" DOT Approved Black Airline, ensure you make a square cut and use a proper airline cutter to prevent angled cuts, which can lead to leaks when connecting to fittings.

The 1/4" DOT Approved Black Airline is sold per metre, allowing you to purchase the exact length needed for your installation without excess waste.