The Cleveland 23132 Glass Gauge Rubber Washer is a sealing component designed for compatible commercial steamer gauge glass assemblies. It helps create a secure seal between the gauge glass and connected fittings, reducing the possibility of water or steam leakage during equipment operation. This washer has a 5/8-inch glass gauge application and a .600-inch inside diameter for proper ... https://partsfe.com/gauge-glass-washer-for-cleveland-part-23132