Instalok couplings feature black nitrile O-rings; the design holds the O-rings so they will not fall out or catch on the tube. The product is made from a solid piece of tube and has fewer components ...

The fitting has three main parts to it: the housing, the O-rings (in this case, two of them), and the compression collar. As with most rigid compression fittings, you slide on the compression ...

When putting together a water loop in a PC, you need the correct fittings. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. In a PC ...