Part Location Diagram of 390156-00 DeWALT O-ring
See part 8 in the diagram
( Grid squares measure 1x1 inch )

O-ring 390156-00

Manufactured by:
DeWALT
ERP Number:
ERP10171254
Part Number:
390156-00
Original Equipment Manufacturer ?
$7.00
In Stock
Delivers in 3-5 Business Days!
Minimum Quantity of 2 required

Easy 

30 - 60 mins 

(4 rated repairs) ?

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Product Description

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This genuine part is produced by original manufacturer. It fits between the bulkhead and spring retainer on some DeWALT framing nailers. An O-ring provides a pressure seal between rigid pieces, preventing leaks and assuring functioning of machine. Sold individually.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • DeWALT
This part works with the following products:
  • Nailer

Questions & Answers

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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

30 - 60 mins 

(4 rated repairs) ?
  • 1
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Sorry, we couldn't find any existing installation instruction that matched.

Gun stopped working. Took it apart, noticed many O-rings got over heated and stretched or ripped

David from Roanoke, Virginia

2 of 2 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Pliers, Screw drivers
Replaced stretched O-rings (from heat), Replaced Trigger Valve (from heat and dirt), Cleaned dirty oil and metal fragments out of the inside of gun. Works as brand new. Make sure to check all O rings. If any are out of place, pinched, or stretched, it will stop your gun from working.
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nail gun leaking air

Richard from San Diego, California

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Wrench set
Parts Used:
612096-00, 606640-00, 390156-00
replaced the bad O rings and saved $200
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Would not hold air pressure

Duane from Barron, Wisconsin

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Socket set
Watched YouTube video of a guy repairing the same nail gun. Took it apart and replaced o rings from a kit I ordered online, made for my nai
Gun.
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Nailer was leakkng air & wouldn\'t fire.

Michael from Coffeyville, Kansas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers
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.
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  • 1