The condenser O-ring kit is a replacement for the rubber in your SS condenser in most VapCap vaporizers. This will ensure tighter operation whenever you use your vaporizer. The rubber rings ensure that everything is sealed and there’s no leak in your device. Because this is an original accessory, it’s basically plug-and-play without you having to worry if the rubbers fit the condenser unlike if you purchase generic products. Aside from leaking, one sure sign that your O-rings are already worn out is if the cap has already loosened. Replace the O-rings as often as necessary to get the most out of your vaporizers.