

High-capacity UHMW HD piston engineered for stable pressure control and smooth reciprocating performance in compatible Graco airless spray pump systems.
The Graco 01/0056-1/88 UHMW HD Piston 15.000 0.194 is designed for select Graco airless sprayer pump assemblies requiring a 15.000” piston with 0.194 specification and UHMW HD construction for heavy-duty industrial performance.
The Graco 01/0056-1/88 is a precision-engineered piston component used in high-capacity Graco airless spray pump systems. Manufactured from UHMW HD (Ultra-High Molecular Weight High Density material), it provides exceptional wear resistance, low friction, and long service life under continuous high-pressure operation.
With a large-format specification of 15.000 x 0.194, this piston ensures accurate sealing and smooth reciprocating motion inside compatible pump cylinders, maintaining stable pressure output and consistent spray performance in demanding industrial applications.
It is commonly used in heavy-duty pump rebuilds and maintenance work where OEM-level durability and performance are required.
Used in industrial coatings, protective painting, large-scale construction finishing, and infrastructure maintenance where Graco airless systems operate under continuous heavy-duty workloads.