The GRACO 555791 is a back-up ring made from PTFE (polytetrafluoroethylene), designed for use in Trabon electrical or mechanical actuated lube pumps. Its primary function is to provide support and sealing within the pump assembly, ensuring reliable operation and preventing leakage.

Key Features:

• Back-Up Ring
• -022 PTFE
• PTFE (polytetrafluoroethylene)
• Trabon Electrical/Mechanical Actuated Lube Pump
• Split cut design for easy installation and maintenance
• Durable PTFE material for chemical resistance and reliability
• Supports sealing and prevents leakage in pump assemblies

Applications:
Used in lubrication systems for industrial machinery, including in-plant equipment and compressor systems, where reliable sealing and support are required within Trabon lube pumps.

Installation Notes:

• Using genuine GRACO back-up rings ensures compatibility, optimal performance, and longevity of the lube pump assembly.
• Ensure the pump is depressurized and isolated before installation
• Inspect the ring for damage prior to installation
• Follow manufacturer guidelines for proper seating and alignment
• Replace back-up rings during routine maintenance or if signs of wear or leakage are observed