Hydraulic hose fittings and couplings are parts that connect hydraulic hoses in a pipe system. Hydraulic hose adapters link hydraulic hoses to pipe and equipment that have different thread types or sizes. Hydraulic hose caps and plugs seal and protect the ends of hydraulic hoses to keep out dust, dirt, and other contaminants. Hydraulic hose fittings are used in custom hose assemblies to join hydraulic hoses to pipe, equipment, and other hoses. Hydraulic hose couplings can be quickly connected and disconnected from hoses without tools. These fittings and couplings are commonly used to create hydraulic hose assemblies for transferring fluids in high-pressure petroleum- and water-based hydraulic systems found on industrial, mining, and manufacturing equipment.