The GRACO 104805 is a backup ring made from PTFE (polytetrafluoroethylene), designed to support and protect o-rings in GRACO fluid handling equipment, particularly in surge tanks and fluid filters. Its primary function is to prevent extrusion and deformation of the o-ring under pressure, ensuring a reliable seal and extending the service life of the sealing system.

Key Features:

• Backup Ring
• PTFE (polytetrafluoroethylene)
• Compatible with GRACO surge tanks and fluid filters, including models referenced in parts lists such as Series A and C
• Supports and protects o-rings from extrusion
• Enhances sealing reliability
• Durable PTFE construction for chemical resistance and longevity
• Reduces downtime by preventing premature o-ring failure

Applications:
Used in GRACO surge tanks and fluid filters to maintain seal integrity under pressure, suitable for industrial fluid handling systems.

Installation Notes:

• Using genuine GRACO backup rings ensures proper fit, performance, and compatibility with GRACO equipment, reducing the risk of leaks and equipment failure.
• Lubricate the PTFE backup ring before installation to ease fitting
• Ensure the backup ring is seated correctly in the groove adjacent to the o-ring
• Follow torque specifications and installation procedures as outlined in the GRACO equipment manual
• Inspect o-rings and backup rings regularly for wear and replace as needed to maintain system integrity