High-Pressure Backup Seal Ring for Graco Fluid System Integrity
Compatible Machines
- Graco 17Z673 Ring, Backup 340 Buna is used in select Graco high-pressure airless spray fluid sections requiring Buna backup sealing components.
- Compatible with Graco professional electric airless sprayers featuring 340 Buna sealing systems.
- Commonly installed in industrial coating equipment where pressure stability and leak prevention are critical.
- Used across select Graco contractor-grade spray systems with high-pressure fluid control assemblies.
What is the Graco 17Z673 Ring, Backup 340 Buna?
The Graco 17Z673 Ring, Backup 340 Buna is an OEM backup sealing component designed to support primary seals within Graco airless spray fluid systems. It is made from 340 Buna material, known for its durability, chemical resistance, and ability to maintain sealing integrity under high pressure.
This backup ring helps prevent extrusion and seal failure by reinforcing critical sealing points within the fluid section, ensuring consistent pressure control and reduced risk of leakage during operation.
As a precision-engineered OEM part, it is designed to maintain system reliability and extend the service life of sealing assemblies in demanding professional spraying environments.
Frequently Asked Questions
It reinforces primary seals to prevent deformation and extrusion under high-pressure conditions.
Yes, it is manufactured to Graco OEM specifications for proper fit and sealing performance.
Buna offers strong resistance to oils, pressure, and wear, making it ideal for high-pressure fluid sealing applications.
It should be replaced during seal service intervals or if deformation, cracking, or leakage is observed.
