Medium
30-60 minutes
The o-ring goes next to the spring. This is an authentic part from DeWALT for use in nailers and staplers. This item is available individually and is made out of rubber. You may need an allen wrench and a set of pliers when replacing this part. It will need to be replaced if it becomes broken.
O-ring 398170-00
OEM part for: DeWALT
Part Number: 398170-00
$4.99
In Stock
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Frequently Purchased Together ?
Compatibility
This part will fit the following 9 machines
DeWALT
D51238 Type 1 Brad Nailer Kit View Diagrams & Manuals
D51238 Type 2 Nailer View Diagrams & Manuals
D51422 Type 1 Stapler View Diagrams & Manuals
D51422K (Type 1) 18 Gauge 1-1/2" x 1/4" Narrow Crown Stapler View Diagrams & Manuals
D51238K (Type 1) 2" 18 Ga Brad Nailer View Diagrams & Manuals
D51238K (Type 2) Lawnedger Power Tool View Diagrams & Manuals
D51238K (Type 3) Lawnedger Power Tool View Diagrams & Manuals
D51422K (Type 2) Lawnedger Power Tool View Diagrams & Manuals
D51422K (Type 3) Lawnedger Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Nailer Parts
- Stapler Parts
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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.
Air blowing out of head of cap assembly
Jerry - April 7, 2021
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Power Drill, Allen wrenches dental pick
Removed 4 cap screws, popped off cap removed 2 orings and seal valve, put in new valve and orings greased the o rings re assembled cap Tool works great N66 coil nailer
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Piston driver assembly was broken
Jody - August 15, 2016
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
, Hex wrench, oring pick
1. Disassembled the piston assembly.
2. Lubed the elastomer parts that were for replacement .
3. Reassembled the nailer.
4. Bench tested the with air and nails.
2. Lubed the elastomer parts that were for replacement .
3. Reassembled the nailer.
4. Bench tested the with air and nails.
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Thanks for voting and helping fellow customers!
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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