The 2.5 mm Gaskets for Pinnacle Hinges Using 5/16" (8 mm) Thick Glass Black are designed for use with Pinnacle series shower door hinges. These gaskets are constructed from plastic and feature a black finish. They are specifically intended for applications using 5/16" thick glass. Each package contains two gaskets. These replacement gaskets are compatible with various hinge series including Geneva, Junior Geneva, Concord, Estate, Monaco, Petite, Pinnacle, Prima, Junior Prima, Senior Prima, Trianon, Vienna, Cologne, Roman, and Zurich. These gaskets provide the necessary spacing and protection between the metal hinge and the glass surface, ensuring a stable fit for frameless shower door installations. The 2.5 mm thickness is specifically calibrated for 5/16" glass to maintain proper alignment and prevent direct metal-to-glass contact. These components are essential for maintaining the structural integrity of the hinge assembly in bathroom shower enclosures. The black finish allows for a discreet appearance when installed with matching hardware. These gaskets are designed for straightforward replacement in existing shower door hinge systems.