Quick facts for part 166072: a vee-lip rubber packing used in the rod/piston seal stack to control leakage and maintain pressure. Verify against your sprayer’s parts diagram before ordering.
Use the list below as a quick guide. Always confirm against your sprayer’s parts diagram before ordering.
Graco 166072 Vee Rubber Packing is a vee-lip sealing element used in rod/piston packing stacks. Its flexible rubber lips energize under pressure to control leakage, maintain prime, and protect the pump from premature wear.
| Part number | 166072 |
|---|---|
| Component type | V-packing (rubber) |
| Typical location | Piston/rod seal stack in displacement pumps and fluid-handling assemblies |
| Primary function | Seals dynamically around a moving rod/piston to prevent fluid bypass and loss of pressure |
| Usage note | Installed in a stack with other packings/washers; orientation and order must follow the parts diagram |
| Question | Answer |
|---|---|
| Will this fit my sprayer model? | Yes—if your official parts list or exploded diagram explicitly lists 166072 in the packing stack. If it shows a different number or only a kit, order that exact item/kit. |
| Is this the only packing I need? | Usually no. V-packings work as a stack with spacers/backups. Many users choose a complete packing kit to refresh all wear components at once. |
| Material and fluid compatibility | Rubber vee packings are widely compatible with typical architectural coatings. For hot solvents/abrasives, confirm the recommended material stack in your manual. |
| Can I mix old and new packings? | Mixing is not recommended. Uneven wear can compromise sealing. Replace the entire stack for best performance. |
