O-Ring Back-Up Ring 97 | HJ-4100825 | 034858/220 | Hydraulic Back-Up Ring for BFT/BHDT Waterjet Intensifier Pumps
The HJ-4100825 O-Ring Back Ring 97, also known as 034858/220, is a critical sealing support component used within BFT and BHDT high-pressure waterjet intensifier pumps. Engineered to work in conjunction with hydraulic O-rings, the HJ-4100825 precision backup ring helps prevent seal extrusion under extreme operating pressures, ensuring reliable sealing performance and consistent hydraulic efficiency.
Installed within the hydraulic intensifier assembly, the HJ-4100825 back ring provides structural support to the primary sealing element during pressure cycles. By maintaining seal integrity, it minimizes internal leakage, protects adjacent components from wear, and contributes to stable pressure generation required for demanding waterjet cutting applications.
Manufactured for use in BFT hydraulic drive systems and Ecotron intensifier pumps, the HJ-4100825 O-Ring Back Ring 97 is commonly specified during preventive maintenance, pump rebuilds, and seal replacement procedures. Replacing worn backup rings at recommended service intervals can improve pump reliability, reduce downtime, and help maintain peak cutting performance.
Key Features
- OEM Part Number: 4100825
- Alternate Reference: 034858/220
- Description: O-Ring Back Ring 97
- Component Type: Hydraulic Seal Backup Ring
- Function: Prevents O-ring extrusion under high pressure
- Application: High-pressure waterjet intensifier pumps
- Compatible with BFT and BHDT hydraulic systems
- Supports leak prevention and pressure stability
- Ideal for pump maintenance and rebuild kits
- Designed for demanding industrial waterjet environments
Benefits
- Improves hydraulic sealing performance
- Extends O-ring service life
- Reduces maintenance frequency
- Minimizes pressure loss and fluid leakage
- Protects expensive hydraulic components
- Enhances overall pump reliability and efficiency
- Supports consistent ultra-high-pressure operation for precision cutting applications
Technical Specifications
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Specification
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Value
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Part Number
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HJ-4100825
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Alternate Number
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034858/220
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Part Name
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O-Ring Back Ring 97
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Part Type
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Backup Ring / Seal Support Ring
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System Type
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Hydraulic Intensifier Pump
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Equipment Compatibility
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BFT, BHDT, Ecotron Systems
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Application
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Waterjet Cutting Pumps
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Installation Area
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Hydraulic Sealing Assembly
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Why Choose HJ Waterjet?
HJ Waterjet replacement parts are engineered to deliver premium-quality, reliable performance, precision fit, and long-lasting durability at a competitive price. Precision manufactured to exact specifications using high-quality materials and tight tolerances, our components are designed for compatibility with OEM waterjet systems and demanding industrial applications. By focusing on quality, precision, and value—not expensive branding—we help manufacturers reduce maintenance costs, minimize downtime, and maximize productivity without compromising performance or reliability. When precision matters, HJ Waterjet delivers the quality, reliability, and value professionals trust. Premium Performance Without the Premium Price