The Case Construction 5183780 Banjo Sealing Washer is a precision-engineered OEM sealing component used in hydraulic brake and fluid line banjo connections. Its primary function is to create a tight, leak-free seal between the banjo bolt, banjo fitting and hydraulic component, preventing fluid loss and pressure drop.

Manufactured to strict Case Construction OEM specifications, this sealing washer is made from high-quality material designed to withstand high hydraulic pressure, vibration and thermal cycling commonly encountered in construction equipment. Correct sealing at banjo joints is critical for maintaining consistent brake response, system safety and long-term component reliability.

This washer is commonly used alongside banjo bolts in brake master cylinders, hydraulic lines and auxiliary hydraulic circuits. Replacing sealing washers during service or overhaul is essential, as reused or deformed washers can lead to fluid seepage, air ingress and reduced braking efficiency.

Key Features & Benefits

• Genuine Case Construction OEM part
• Part Number: 5183780
• Designed for banjo bolt hydraulic connections
• Ensures leak-free sealing and pressure integrity
• Resistant to hydraulic fluid, heat and vibration
• Prevents brake fluid seepage and air entry
• Improves system safety and reliability
• Direct-fit replacement with OEM dimensions

Applications

Used in Case Construction equipment for:

• Brake master cylinder banjo connections
• Hydraulic brake lines
• Hydraulic fluid line sealing

(Application subject to system design and banjo fitting size.)