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Graco 01/0055-1Z/89 Piston 12.344 0.194 Nyl Hd

High-precision Nylon HD piston designed to deliver stable pressure and smooth reciprocating performance in compatible Graco airless spray pump systems.

  • Size: 12.344 x 0.194 specification
  • Material: Nylon HD for durability and wear resistance
  • Used in select Graco professional airless sprayers
  • Supports consistent high-pressure spray output
  • OEM-fit component for pump maintenance and rebuilds

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Precision Nylon HD Piston for Reliable Operation in Graco Airless Spray Systems

Compatible Machines

The Graco 01/0055-1Z/89 Piston 12.344 0.194 Nyl Hd is designed for select Graco airless sprayer pump assemblies requiring a 12.344” piston with 0.194 specification and Nylon HD construction for stable 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 390 / 395 / 490 / 495 / 595 Professional Sprayer Units
  • Graco OEM pump rebuild kits requiring 12.344 x 0.194 Nylon HD pistons

What is the Graco 01/0055-1Z/89 Piston 12.344 0.194 Nyl Hd?

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

With exact dimensions of 12.344 x 0.194, this piston ensures precise sealing and smooth reciprocating movement within compatible Graco pump cylinders, maintaining stable pressure output and consistent spray performance in demanding coating applications.

It is commonly used in pump rebuilds 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 12.344 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 environments where Graco airless sprayers operate under continuous high-pressure conditions.

Frequently Asked Questions

Nylon HD refers to high-density nylon material engineered for strength, dimensional stability, and wear resistance in high-pressure pump systems.

No, piston size must match exactly. The 12.344 x 0.194 specification is specific to compatible Graco pump assemblies.

Pressure fluctuation, uneven spray pattern, leakage in the pump assembly, or reduced spray output indicate possible piston wear.

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