Graco 111711 Backup Ring – Product Overview
The Graco 111711 Backup Ring is an OEM replacement part manufactured by Graco. It is a precision support ring (also known as a backup ring) used to reinforce sealing components under high pressure and prevent extrusion of O‑rings or other seals. According to one listing, its weight is approx. “0.001+ lbs” with very small dimensions. :contentReference[oaicite:1]{index=1}
Key Features
- OEM quality part supplied directly or via authorized Graco distributors. :contentReference[oaicite:2]{index=2}
- Designed as a Backup Ring — provides structural support for a seal in high‑pressure fluid systems.
- Compact dimensions — as listed, approx. 0.1″ + X +0.35″ + X +0.3″; very small and likely used in a manifold, valve or pump assembly. :contentReference[oaicite:3]{index=3}
Compatible Machines
Below are common Graco machine series where the part number 111711 has been found or is likely compatible (based on equipment parts lists). Always confirm with your unit’s actual serial number/parts list before use.
- Graco Ultra 395 PC – Stand / Hi‑Boy models
- Graco Ultra Max II 490 PC / 495 PC / 595 PC – ProCart / Stand variants
- Graco Ultra Max II series (e.g., 695, 795) – contractor‑grade airless sprayers
*These model series are drawn from Graco cross‑reference tables and may share common pump/manifold components. :contentReference[oaicite:4]{index=4}
Installation & Maintenance Tips
When replacing the backup ring, follow these best practices to ensure reliable performance:
- Shut off and relieve pressure from the system before disassembly.
- Inspect the mating surface and the O‑ring or seal that the backup ring supports—replace any degraded components.
- Clean the groove thoroughly and remove any debris or old sealant.
- Place the backup ring in the correct orientation (if applicable) and re‑install the O‑ring or seal according to manufacturer’s instructions.
- Re‑assemble, apply correct torque, and test the system at normal operating pressure to check for leaks.
Frequently Asked Questions
The backup ring supports the seal (for example an O‑ring) by preventing extrusion of the seal material under high pressure. It helps maintain integrity of the seal assembly in fluid systems typical of airless spray equipment.
Verify your machine’s model and serial number, then consult the official parts breakdown or exploded diagram. Look for part number 111711 in the list. If it appears, you can use the part. If not, contact Graco or your local parts supplier for guidance.
Some applications may require backup rings in different materials (e.g., PTFE, Viton) or other sizes. Always check the specification of your system, part number and design detail. Generic lists of compatible machines should not be assumed universal.
Note: Always wear appropriate protective equipment when servicing high‑pressure fluid systems and follow all safety instructions provided by Graco and your machine manufacturer.
