Graco 166072 Vee Rubber Packing
$29.10
In Stock
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.
- Component type: V-packing (rubber)
- Typical location: rod/piston packing stack
- Purpose: seals dynamically to prevent fluid bypass
- Fit check: your model’s diagram must list 166072
- Best practice: replace full stack if wear is evident
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Genuine OEM Part
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Product Overview & Fit Guidance
Compatible Machines
Use the list below as a quick guide. Always confirm against your sprayer’s parts diagram before ordering.
- Graco pumps / sprayers whose parts list specifically calls out part 166072 (V-packing)
- Seal stacks on Graco displacement pumps used across contractor & industrial airless units, where the diagram lists 166072
- Selected Mark-Series and Ultra / Ultra Max II models when their official parts list specifies 166072 in the rod/piston packing stack
- Other Graco fluid-handling systems that use vee-rubber packings with the exact 166072 dimension and profile
What this part does
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.
Key specifications
| 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 |
Fit checks before you buy
- Match the callout in your model’s exploded view: the packing should be listed as 166072.
- Confirm the seal stack orientation and count (some stacks mix materials and sizes).
- If your manual lists a kit that includes 166072, you may prefer the full kit for a complete refresh.
When to replace
- Persistent weeping at the throat or loss of pressure/prime
- Noticeable scoring, swelling, or flattened lips on inspection
- After abrasive/solvent-heavy jobs or at scheduled overhaul intervals
Basic installation notes
- Depressurize the unit completely and follow lock-out procedures
- Clean the gland/stack area; replace any damaged spacers or backup rings
- Observe vee orientation and stack order exactly as shown in the parts diagram
- Lightly lubricate if specified by the service manual; torque fasteners to spec
Frequently Asked Questions
| 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. |
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