Parker RK0400K000 Accumulator Seal Kit 4 Inch Bore

Product Description

The PARKER RK0400K000 is a Buna-Nitrile seal kit designed for 4 inch bore piston accumulators. It provides all the sealing components needed to service or rebuild a piston-style hydraulic accumulator, restoring proper fluid separation and gas charge retention. The kit uses Buna-Nitrile as the primary seal material, which offers broad compatibility with common hydraulic fluids. PTFE glide rings are also included to reduce friction on the piston during travel. Licensed hydraulic technicians and fluid power specialists typically perform this type of service work on industrial or mobile hydraulic systems.

This seal kit is suited for maintenance and rebuild applications on 4 inch bore piston accumulators found in industrial machinery, mobile equipment, and hydraulic power units. When accumulator performance degrades due to internal seal wear or fluid bypass, replacing the full seal set with this kit restores proper function. The complete kit eliminates the need to source individual components separately, making it a practical choice for scheduled maintenance or emergency field repair.

Key Features

• Buna-Nitrile seal material for compatibility with common petroleum-based and water-glycol hydraulic fluids
• PTFE glide rings included to minimize piston friction and extend seal service life
• Complete kit includes V O-ring piston seal, V O-ring backups, O-ring, O-ring backup, and gas valve O-ring
• Designed specifically for 4 inch bore piston accumulator service
• Single-package kit simplifies parts procurement for rebuild or scheduled maintenance

Compatibility

Designed for use with 4 inch bore piston accumulators. Verify accumulator bore size and existing seal material before ordering to confirm fitment.

Installation Notes

Hydraulic accumulator seal replacement should be performed by a qualified fluid power technician. Before disassembly, fully discharge the gas precharge pressure and relieve all hydraulic system pressure to zero. Inspect the accumulator bore and piston for scoring or damage before installing new seals. Follow the accumulator manufacturer's service documentation for proper assembly sequence and gas recharge procedures.