What explains the need for lubrication when assembling new MS flareless fittings?

The need for lubrication when assembling new MS flareless fittings primarily relates to easing the presetting of the fitting. Flareless fittings are designed to create a secure and leak-proof connection without the need for flaring the tubing. When these fittings are assembled, lubrication helps to facilitate the threading process, allowing the fitting components to move more smoothly against each other. This reduction in resistance is crucial for ensuring that the fitting can be tightened adequately and achieve the proper mechanical engagement, which is essential for maintaining system integrity.

While reducing friction during installation, guaranteeing a tight seal, and preventing corrosion are all important aspects of working with fittings, the key focus in this context is the role of lubrication in the initial assembly phase. It directly impacts the ease of fitting adjustment and assures that the assembly can be completed without binding or damaging the components.