This replacement o-ring is a high quality item that is specially produced for Dewalt framing nailers. It is used to provide an air tight seal between the bumper and the collar. For correct location and application of this part please make sure to check appropriate diagrams. Note that this rubber o-ring is sold individually.
Took it apart, cleaned it up. Replaced all the o-rings & seals. Pretty simple repair. The parts diagram on your website was perfect. Helped me order the correct parts.
1. Removed the piston and the bulkhead.
2. Replaced the o-ring, found a leak at the trigger.
3. Took it apart and replaced the o-ring in it. Works fine now.
Removed the top cap of the nail gun. Then removed the cylinder. Located 3 o-rings that were worn and stretched. Removed the them and replaced them with the new parts. And thoroughly cleaned and oiled the gun. Then reassembled it. It shoots like a new gun.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP10171250
Manufacturer Part Number: 390146-00
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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