Washers for adapters are essential components used to create a secure, leak-free seal between threaded fittings and surfaces in hydraulic and pneumatic systems. Typically made from materials such as steel, brass, or stainless steel, these washers distribute pressure evenly across the connection, preventing damage to both the adapter and the connected surface. Their primary function is to prevent leaks, reduce vibration, and provide additional support, ensuring the longevity and efficiency of fluid power systems. Whether used with BSPP, NPT, or other types of threaded connections, washers are a key element in maintaining a tight, reliable seal under high-pressure conditions.