HP Hybrid Seal Assembly | .875 Plunger | SL-IV Plus Flange & SL-V HSEC | 55K &60K | HJ-05149703
The HJ-05149703 High Pressure Seal Assembly is a precision-engineered dynamic sealing component designed for .875-inch plunger KMT 60,000 PSI (3,800–4,100 bar) intensifier pumps. This HJ-05149703 High Pressure Seal Assembly provides reliable high-pressure sealing between the ceramic plunger and high-pressure cylinder, ensuring maximum pump efficiency, stable operating pressure, and extended component life.
Designed specifically for KMT SL-IV Plus Flange and SL-V HSEC intensifier pumps, the HJ-05149703 seal assembly helps eliminate internal leakage, minimize pressure loss, and reduce premature wear on expensive pump components. It is an essential maintenance item during scheduled pump rebuilds and preventive maintenance programs. This part is identified as the HP Seal Assembly for 0.88 (.875) plunger units used on SL-IV Plus flange units and SL-V HSEC units operating at 3,800–4,100 bar (approximately 55,000–60,000 PSI).
Manufactured from premium high-pressure sealing materials, this assembly is engineered to withstand continuous ultra-high-pressure cycling while maintaining consistent sealing integrity under demanding industrial waterjet cutting conditions.
Features & Benefits
- Precision-engineered replacement for KMT Part Number 05149703
- Designed for .875" ceramic plunger intensifier pumps
- Compatible with 55,000–60,000 PSI (3,800–4,100 bar) systems
- Restores original sealing performance
- Minimizes high-pressure water leakage
- Improves pressure consistency
- Helps protect ceramic plungers and HP cylinders
- Reduces pump downtime
- Extends service intervals
- Manufactured using premium wear-resistant sealing materials
- Direct-fit replacement requiring no modifications
Applications
Ideal for high-pressure waterjet systems used in:
- Metal fabrication
- Aerospace manufacturing
- Automotive production
- Stone and granite cutting
- Glass processing
- Composite materials
- Food processing equipment
- Industrial manufacturing
- Precision waterjet machining
Compatible Equipment
Designed for:
- KMT SL-IV Plus Flange Intensifier Pumps
- KMT SL-V HSEC Intensifier Pumps
- .875" Plunger High Pressure Assemblies
- 55K PSI systems
- 60K PSI systems
Compatible with the applications for SL-IV Plus flange and SL-V HSEC units.
Common Signs Replacement is Needed
- High-pressure water leakage
- Loss of cutting pressure
- Pump cycling more frequently
- Reduced cutting performance
- Excessive seal wear
- Water entering hydraulic components
- Pressure fluctuations
- Scheduled preventive maintenance
Why Replace the HP Seal Assembly?
The HJ-05149703 HP Seal Assembly is one of the most critical wear components inside a waterjet intensifier pump. As seals wear over time, pressure loss and internal leakage increase, reducing cutting efficiency and placing additional stress on expensive components such as ceramic plungers, cylinders, and sealing heads.
Replacing the HJ-05149703 Seal Assembly at recommended service intervals helps:
- Maintain full operating pressure
- Increase pump efficiency
- Protect expensive intensifier components
- Reduce unexpected downtime
- Lower maintenance costs
- Maximize overall equipment reliability
Technical Specifications
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Specification
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Details
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Part Number
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HJ-05149703
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Product Type
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High Pressure Seal Assembly
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Plunger Size
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.875 in (0.88")
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Operating Pressure
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55,000–60,000 PSI
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Pressure Rating
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3,800–4,100 Bar
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Pump Type
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Waterjet Intensifier
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Compatible Pumps
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SL-IV Plus Flange, SL-V HSEC
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Installation
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Direct Replacement
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Function
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Dynamic High-Pressure Sealing
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