product details
Description
| Part Name | RING;BACK-UP |
| Part Number | 4046168 |
| Brand Name | HITACHI |
| Place of Origin | Japan |
| Delivery Time | 1-3 work days |
| Packaging Type | Cartons |
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The Silent Partner in High-Pressure Sealing. In high-pressure hydraulic systems, the difference between a reliable seal and catastrophic fluid loss often depends on a component that never touches the fluid—the back-up ring. This Genuine Isuzu Back-Up Ring is manufactured to exact OEM specifications, providing the precise inside diameter, outside diameter, and thickness required to support O-rings and seals under extreme pressure. Unlike generic washers or improvised spacers, this genuine component features a precisely controlled cross-section that fills the gap between the O-ring and the housing gland. When system pressure attempts to extrude the softer O-ring material into the clearance gap, this back-up ring provides the rigid support that prevents extrusion and subsequent seal failure. The ring's inner diameter matches the shaft exactly, while the outer diameter fits the housing bore with precision clearance. The thickness is carefully calibrated to provide support without restricting O-ring compression or movement. This precision ensures that your high-pressure seals maintain their integrity even under the most demanding operating conditions. |
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Extrusion-Resistant Polymers Engineered for Extreme Pressure. Back-up rings operate in environments where pressures can exceed 5,000 PSI, with momentary spikes far higher. Under these conditions, standard elastomers would flow like liquid into any available gap. This genuine Isuzu back-up ring is constructed from advanced materials specifically selected for their exceptional resistance to extrusion and deformation under pressure. Typically manufactured from premium engineering polymers such as PTFE (Teflon), PEEK, or filled nylon, the ring material exhibits high compressive strength while maintaining the slight flexibility required for installation. The material may incorporate specialized fillers—such as carbon fiber, bronze, or glass—that enhance strength, reduce friction, and improve wear resistance in dynamic applications. Unlike softer materials that would cold-flow or deform over time, this engineered polymer maintains its dimensional stability through countless pressure cycles. The material also provides excellent chemical resistance, ensuring compatibility with the full range of hydraulic fluids, transmission fluids, and lubricants used in Isuzu systems. |
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Prevent Extrusion, Seal Failure, and Catastrophic Fluid Loss. In high-pressure hydraulic systems, O-ring extrusion is the primary cause of sudden, catastrophic seal failure. As pressure rises, the O-ring attempts to flow into the clearance gap between moving components. Without proper support, the O-ring material extrudes into this gap—first as a slight bulge, then as a progressive nibbling away of the seal material, and finally as complete seal failure with massive fluid loss. In dynamic applications, this process accelerates dramatically with each cycle. The result can be sudden loss of braking pressure, transmission function, or hydraulic control—creating safety hazards and leaving you stranded. By installing this Genuine Isuzu Back-Up Ring, you provide the critical support that keeps your O-rings where they belong—properly positioned and fully functional within their glands. The precision-fit ring bridges the clearance gap, preventing extrusion while allowing the O-ring to maintain its sealing contact. For transmission overhaul, hydraulic system repair, or any high-pressure sealing application, this genuine component provides the assurance that your seals will maintain their integrity under the most demanding conditions—thousands of kilometers of reliable, leak-free operation to come. |
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The Ownership Of The Products Belongs To Guangzhou Qicheng Machinery Equipment Co., Ltd.