Part Location Diagram of 851439 DeWALT O-RING-1.689X.190
See part 14 in the diagram
( Grid squares measure 1x1 inch )

O-RING-1.689X.190 851439

Manufactured by:
DeWALT
ERP Number:
ERP12504752
Part Number:
851439
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!
Minimum Quantity of 2 required

Easy 

30 - 60 mins 

(3 rated repairs) ?

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Product Description

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This is a genuine replacement part produced by original manufacturer. It is found in assorted models of Bostitch nailers. An O-ring prevents pressure loss by creating a flexible seal between rigid parts. Many tools use different sizes/shapes of O-ring throughout, so ensure that correct one is used. Sold individually.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Bostitch
  • DeWALT
This part works with the following products:
  • Nailer
Part# 851439 replaces these:
851439,

Customer Part Reviews

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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(4 Reviews)
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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 

(3 rated repairs) ?
  • 1
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Leaking air inside nailer

DALLAS from GRENADA, Mississippi

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Wrench set
Parts Used:
N70155, N70156, T55031, 851439, 9R199852
I disassembled the gun carefully to see how each part works & to reassemble gun,
After cleaning gun, I put on the new parts & it nailed perfect. This gun is about 30 years
old & thank you for still having the parts!
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Cylinder seal split with age.

Jason from MANSFIELD, Texas

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Laid out a towel on the kitchen table. Disassembled. Cleaned (everything was filthy). Replaced old parts with new ones. Reassembled. Worked like a champ.
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Not driving nails

gary from queensbury, New York

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Wrench (Adjustable)
Parts Used:
TVA6, 851439, N80367A
Remove head of gun, 4 allen screws,slide out driver ,put new o ring on new driver replace driver ,nailer head and 4 screws. drive out pins of trigger valve,replace with new valve replace pins. make sure new valve goes in like the old one came out. make sure seated all the way in.
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  • 1