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Sandvik Hydraulic Accumulator Cap (Part Number 08537018) – High-Pressure Sealing Component for Nitrogen-Charged Systems
Precision-machined double O-ring groove on 08537018 cap | Compatible with HNBR seals for nitrogen gas retention
1/4" NPTF threaded port for nitrogen charging valve | ISO 1179-1 compliant connection

Hydraulic Accumulator Cap 08537018 | High-Strength Alloy Steel for Nitrogen-Charged Systems

Part Number: 08537018
  • Material: 4140 alloy steel (quenched and tempered, 28-32 HRC)
  • Dimensions:
    • Nominal Size: M30x1.5 threads
    • OD: 50 mm
    • Height: 25 mm
    • Nitrogen Port: 1/4″ NPTF (ISO 1179-1 compliant)
  • Performance:
    • Working Pressure: 35 MPa
    • Proof Pressure: 60 MPa
    • Burst Pressure: 70 MPa
  • Design Features:
    • Double O-ring groove for redundant sealing
    • Nitrogen pre-charge port with dust cap
    • Torque specification: 220-260 N·m
  • Compliance: ISO 10100 (hydraulic accumulators), ISO 4413 (hydraulic systems safety)
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High-Pressure Accumulator Cap for Hydraulic Systems
Engineered for nitrogen-charged hydraulic accumulators, this cap ensures reliable pressure containment and gas retention in high-performance systems. Constructed from 4140 alloy steel with a quenched and tempered finish (28-32 HRC), it withstands extreme pressure differentials while maintaining structural integrity.

 

Technical Specifications & Design
The cap adheres to ISO 10100 standards for hydraulic accumulators, featuring M30x1.5 threads for secure attachment to accumulator bodies. Its precision-machined double O-ring groove accommodates HNBR seals, providing redundant sealing to prevent nitrogen leakage. The 1/4″ NPTF threaded port (ISO 1179-1 compliant) allows for safe nitrogen pre-charging and pressure monitoring.

 

Performance Advantages
  • High Pressure Resistance: Designed for 35 MPa working pressure with 60 MPa proof pressure rating, ensuring safety margins in critical applications.
  • Gas Retention: Double O-ring design minimizes nitrogen leakage, reducing maintenance frequency.
  • Material Durability: 4140 alloy steel with 28-32 HRC hardness resists wear and fatigue under cyclic loading.
  • Ease of Service: Standardized NPTF port and clear torque specifications simplify maintenance.

 

Applications
  • Hydraulic Accumulators: Critical for nitrogen-charged piston or bladder accumulators in mining equipment.
  • Shock Absorption Systems: Used in hydraulic rock drills to dampen vibration and protect components.
  • Energy Storage: Supports hydraulic systems requiring rapid energy release, such as tunnel boring machines.

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