The GRACO PTFE Backup Ring is a solid, chemical-resistant ring made from PTFE (polytetrafluoroethylene), designed to be installed alongside O-rings in GRACO equipment to prevent extrusion and improve sealing performance under high pressure.

Key Features:

• Backup Ring
• Size #016 (AS-568: 016; Inner Diameter: 0.625 in; Cross Section: 0.052 in; Thickness: 0.050 in)
• Solid Virgin PTFE
• Designed for use with GRACO equipment, specifically proportioning pumps and systems requiring backup rings for O-rings
• Chemical resistance
• High reliability
• Prevents O-ring extrusion
• Ease of installation

Applications:
Used in GRACO proportioning pumps and other hydraulic or fluid handling equipment where O-rings are subject to high pressure and risk of extrusion into hardware clearance gaps.

Installation Notes:

• Using genuine GRACO backup rings ensures proper fit, performance, and longevity of the sealing system, reducing the risk of leaks and equipment failure.
• Install the backup ring between the O-ring and the extrusion gap in the hardware
• Ensure the backup ring is seated properly and not twisted or damaged during installation
• Inspect O-rings and backup rings for wear or damage during routine maintenance