Data centers are engineered around one uncompromising principle: uptime. As compute density increases and cooling systems evolve, infrastructure components are subjected to higher temperatures, tighter tolerances, and continuous operational stress. While much attention is placed on servers and cooling technologies, smaller mechanical components like seals, gaskets, fittings, and couplings play a critical role in maintaining system integrity. Failures rarely start large. They begin at connection points. This article explores where sealing and conveyance challenges arise in data center environments and how material selection supports long-term reliability.