Graco 01/0055-W/89 Dpiston 12.733 x 0.194 Nylon

Compatible Machines

The Graco 01/0055-W/89 Dpiston 12.733 x 0.194 Nylon is designed for select Graco airless sprayer pump assemblies requiring a 12.733” D-piston with 0.194 specification and nylon construction for reliable high-pressure operation.

• Graco Ultra Max II Series (specific pump configurations)
• Graco Mark Series Airless Sprayers (compatible pump assemblies only)
• Graco GH Hydraulic Airless Systems (matching D-piston specification required)
• Graco 390 / 395 / 490 / 495 / 595 Professional Sprayer Units
• Graco OEM pump rebuild kits requiring 12.733 x 0.194 nylon D-pistons

What is the Graco 01/0055-W/89 Dpiston 12.733 x 0.194 Nylon?

The Graco 01/0055-W/89 is a precision-engineered D-shaped piston component used in professional Graco airless spray pump systems. It is manufactured from durable nylon, offering a strong balance of low friction, impact resistance, and long service life in demanding hydraulic environments.

With exact dimensions of 12.733 x 0.194, this piston ensures accurate sealing and controlled reciprocating motion inside compatible pump cylinders, helping maintain consistent pressure and smooth spray performance.

It is commonly used in pump rebuilds and maintenance applications where OEM-level precision and reliability are required.

Key Features & Benefits

• Durable nylon construction for wear resistance
• Precision-machined 12.733 x 0.194 dimensions
• D-shaped design for optimized pump sealing performance
• Supports stable high-pressure airless spray output
• Compatible with select Graco professional spray systems

Applications

Used in industrial coatings, commercial painting, construction finishing, and maintenance operations where Graco airless sprayers operate under continuous high-pressure workloads.

Frequently Asked Questions