The Graco 164964 Packing O-Ring is a PTFE seal for the intake/packing stack that helps prevent fluid bypass and maintain prime. Use this size only where your parts manual specifies 164964 (or 164-964).
Verified fit based on published parts references. Always confirm against your sprayer’s parts manual before ordering.
The Graco 164964 Packing O-Ring is a PTFE (Teflon) sealing ring used in high-pressure pump sections to prevent fluid bypass and maintain prime. Typical installation is within the intake/packing stack of compatible Graco pump assemblies.
| Attribute | Detail |
|---|---|
| Graco Part No. | 164964 (also written as 164-964 in some catalogs) |
| Type | Packing O-Ring / sealing ring for pump intake/packing stack |
| Material | PTFE (Teflon) |
| Approx. Size | ~2.3″ OD × ~2.25″ ID × ~0.10″ thickness (reference size; confirm in your manual) |
| Typical Use | Prevents leakage and maintains pressure/prime in the fluid section |
For models beyond those listed above, verify by checking the exploded parts diagram of your exact sprayer/pump. Look for the intake/packing stack callout referencing part 164964 (or 164-964).
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