Graco 01/0055-1AP/89 Nylon HD Piston 12.247 0.194

Compatible Machines

The Graco 01/0055-1AP/89 Nylon HD Piston 12.247 0.194 is designed for select Graco airless sprayer pump assemblies requiring a 12.247” piston with 0.194 tolerance and HD nylon construction for reliable high-pressure performance.

• Graco Ultra Max II Series (specific pump configurations)
• Graco Mark Series Airless Sprayers (compatible pump assemblies only)
• Graco GH Hydraulic Airless Systems (matching piston specification required)
• Graco 490 / 495 / 595 / 695 / 795 Professional Sprayer Units
• Graco OEM pump rebuild kits requiring 12.247 x 0.194 Nylon HD pistons

What is the Graco 01/0055-1AP/89 Nylon HD Piston 12.247 0.194?

The Graco 01/0055-1AP/89 is a precision-engineered piston component used in professional airless spray pump systems. Manufactured from Nylon HD, it provides high strength, low friction operation, and excellent wear resistance under continuous hydraulic pressure.

With exact dimensions of 12.247 x 0.194, this piston ensures precise sealing and smooth reciprocating motion inside compatible Graco pump cylinders, supporting stable pressure output and consistent spray quality in demanding coating applications.

It is commonly used in pump rebuild and maintenance operations where OEM-grade fitment and long-term durability are required.

Key Features & Benefits

• Nylon HD construction for durability and wear resistance
• Precision-machined 12.247 x 0.194 dimensions
• Supports stable high-pressure airless spray performance
• Reduces internal wear and improves pump efficiency
• Compatible with select Graco professional spray systems

Applications

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

Frequently Asked Questions