How to Reassemble Fluid System Tube Fittings Properly
Learn how to properly reassemble Swagelok® tube fittings while maintaining the leak-tight performance and reliability they are designed to deliver. Correct reassembly practices help preserve fitting integrity, reduce the risk of leaks, and support long-term system performance. This video demonstrates key reassembly steps and reinforces best practices that align with established installation guidelines. For a deeper understanding of fitting design and performance, explore the tube fitting advantage.
Video Transcript
The benefits of using Swagelok tube fittings is their ability to be disassembled and reassembled while retaining the leak-tight seal.
Let's take a moment to review the reassembly procedure for all Swagelok tube fittings.
Prior to disassembly, mark the tubing at the back of the nut. Mark a line along the nut and body flat. Use these marks to ensure that you return the nut to the previously pulled-up position.
Insert the tubing or tube adapter end connection with preswaged ferrules into the fitting until the front ferrule seats against the fitting body.
While holding the fitting body steady, rotate the nut with a wrench to the previously pulled-up position as indicated by the marks on the tubing and flat.
At this point, you'll feel a significant increase in resistance. Tighten the nut slightly.
Do not use a gap inspection gauge with reassembled fittings.
