The GRACO 112956 is a spiral back-up ring, typically made from PTFE (polytetrafluoroethylene), designed to prevent O-ring extrusion under high pressure in GRACO equipment. It is used to protect O-rings from being forced into clearance gaps, thereby preventing premature failure and ensuring reliable sealing performance.

Key Features:

• Back-Up Ring, Spiral
• PTFE (polytetrafluoroethylene) or similar high-performance plastic
• Compatible with GRACO equipment requiring back-up rings for O-ring protection
• Spiral cut for easy installation and removal
• High chemical resistance and temperature stability
• Reliable performance in demanding industrial environments
• Helps extend O-ring and seal life

Applications:
Used in GRACO lubrication and fluid handling equipment where high-pressure sealing is required, such as in pumps, valves, and hydraulic systems. Suitable for industries including mining, agriculture, and manufacturing.

Installation Notes:

• Using genuine GRACO back-up rings ensures proper fit, performance, and longevity of seals, reducing downtime and maintenance costs.
• Ensure the equipment is depressurized before installation
• Inspect the O-ring and back-up ring for damage before installation
• Install the spiral back-up ring adjacent to the O-ring in the correct orientation
• Refer to the equipment manual for specific installation procedures
• Regularly inspect seals and back-up rings for wear or damage
• Replace back-up rings whenever O-rings are replaced or during routine maintenance
• Use only genuine GRACO replacement parts for optimal performance