Dewalt 398167-00 O-ring

Product Description

The DEWALT 398167-00 is an OEM replacement O-ring designed for use in DEWALT power tools that rely on sealed pneumatic or hydraulic assemblies. O-rings function as static or dynamic seals, preventing fluid or air leakage at joints and fittings within the tool body. This part is a direct factory replacement, ensuring the correct material composition and dimensional fit needed to restore proper sealing performance. Licensed HVAC, plumbing, and mechanical technicians as well as tool service professionals install O-rings as part of routine maintenance or after visible seal failure.

This O-ring is intended for use in DEWALT power tool assemblies where the original seal has worn, cracked, or lost elasticity. Typical install scenarios include compressor-driven pneumatic nailers, drills, and similar tools that require intact sealing components to maintain operating pressure and prevent contamination ingress. Service is performed by tool repair technicians or experienced tradespeople familiar with DEWALT tool disassembly procedures.

Key Features

• OEM replacement part for precise dimensional and material match to original specification
• Restores airtight or fluid-tight sealing in DEWALT tool assemblies
• Designed to resist wear under the operating conditions of DEWALT power tools
• Direct factory replacement eliminates fitment guesswork during service

Compatibility

Designed as an OEM-style replacement O-ring for compatible DEWALT power tool models requiring part number 398167-00.

Installation Notes

Installation should be performed by a qualified tool service technician. Disconnect the tool from all power sources and depressurize any pneumatic lines before disassembly. Inspect the seating groove for debris or damage before installing the new O-ring. Avoid using sharp tools during installation to prevent nicking or cutting the seal material.

Technical Specifications

• Part Type: O-Ring

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: 398167-00