Part Location Diagram of N044359 DeWALT TUBE SEAL
See part A-3 in the diagram
Replacing your DeVilbiss Compressor TUBE SEAL
( Grid squares measure 1x1 inch )

TUBE SEAL N044359

Manufactured by:
DeWALT
ERP Number:
ERP12522478
Part Number:
N044359
Original Equipment Manufacturer ?
  Works with your model  CF1400!
In Stock
Delivers in 3-5 Business Days!

A Bit Difficult 

30 - 60 mins 

(39 rated repairs) ?
  Works with your model   CF1400!

Product Description

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This replacement tube seal is a high quality item that is supplied by original equipment manufacturer for use with Craftsman air compressors. It is placed on the outlet tube coming from the head of the compressor. Please note this durable rubber tube seal is sold individually.

Troubleshooting

This part fixes the following symptoms:
  • Air leak
This part works with the following brands:
  • DeVilbiss
  • Craftsman
  • Porter Cable
  • Black and Decker
  • DeWALT
  • Delta
  • Bostitch
  • Husky
  • Stanley
This part works with the following products:
  • Compressor
Part# N044359 replaces these:
  • N044359
  • PN044359

Videos For installing this part.

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Replacing your TUBE SEAL
Replacing your TUBE SEAL

Customer Part Reviews

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4.9
Average Rating (out of 5):
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(34 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.

A Bit Difficult 

30 - 60 mins 

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

Tube seal leak caused the compressor to cycle very often.

John from Post Fallls, Idaho

27 of 27 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
N044359
The top portion of the Porter-Cable compressor is somewhat difficult to access. There are two screws that keep the upper assembly intact. Once removed the top part slides about 1\" and then there are 4 screws that hold the upper pieces (2) together. The compressor head must be removed taking care not to damage the gasket. The tube se al has a seat in which it sets. Push the seal over the tube, insert the seal in its place and put the head back on the compressor.

To make it easier, I removed the clamp that held the rubber hose going into the tank and replaced the clamp with a screw type. It offered a lot of movement that had been restricted.

There are a number of rubber bumpers that protect the components. They are easily knocked off. Take note of where they belong and ensure all are in place before reassembly.
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blown head gasket

Konrad from Sedro Woolley, Washington

15 of 15 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Pliers, Screw drivers
Parts Used:
D30139, N044359, N017592SV
This repair covers a blown head gasket on a Porter Cable pancake compressor.

While using the machine, it started making a strange noise and refused to develop pressure.

Using a socket drive I disconnected the high pressure hose exiting the motor/pump cover going to the one way check valve mounted on the tank. ... Read more />
Using a Philips head screwdriver, I removed the two screws holding the housing in place near the tank brackets.

Using a torx driver I removed the screws holding the two motor/pump cases together, pushed the assembly forward from the mounting brackets and then separated the plastic cases.
There are rubber mounting feet placed at various locations keeping the pump and motor mounted to the plastic cases. Be certain to retain all of these square feet. If one or more are lost, they are available at this site as a separate part number.

Once again, using a nut driver, I removed the pump head (four screws) and separated the gaskets, valve assembly and O-ring. This is when I discovered the missing piece of head gasket. As the parts were so inexpensive, I ordered everything except the head casting itself.
The gasket kit I received had a replacement gasket to go with the new valve assembly that no longer used the O-ring. The gasket kit contained an O-ring had I used the old valve assembly.
Installing the head required using a cross-tightening pattern for installing the head bolts. As I had no specifics regarding the actual torque suggested for the head bolts, I tightened them to a level I thought appropriate without stripping the cylinder threaded holes.

Re-assembly was a reversal of the process listed above.

Silly me! Had I known the repair was going to be successful, I would have ordered motor brushes as they are worn more than half way and are only another $20. Now I need to order additional parts and separate the motor/pump casing halves again in order to replace the brushes.

KL
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Gasket turned brittle and fell apart from tube. This was the original gasket when I bought the compressor 12 years ago.

mike from camby, Indiana

9 of 9 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Screw drivers
Parts Used:
N044359
After removing the Compressor motor from its housing, I simply cleaned off remaining gasket on tube, Open the compressor compartment housing the tube was attached to by removing the four bolts. To help get new gasket on tube, I rubbed dish washing soap on tube to help slide new gasket into place. I aligned flange of new gasket to compres sor compartment tighten bolts. Mounted compressor motor back in housing reattached it to compressor tank good as new.
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Tub seal was shot and leaking air not letting the compressor build pressure.

Rick from Aumsville , Oregon

7 of 7 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
N044359
Removed the screws holding the two half\'\'s of the compressor and removing the hose clamps. Then remove the old tub seal and install the new tub seal. Put it all back together. It works just fine and no more air leaks.
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Air leaking from tube seal

Don from Baytown, Texas

5 of 5 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Screw drivers
Parts Used:
N044359
I found your YouTube video on how to replace the seal. It is a excellent video and very informative. I followed it and had my compressor working with no air leaks. Here is a copy of the link. I hope it will help some others with the same problem.

https://www.youtube.com/watch?v=ot_urG5olPM
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Compressor was leaking at the exhaust tube

neil from GRESHAM, Oregon

4 of 4 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
N044359
Remove the two screws holding the compressor to the tank. Slide the unit off the tank. Remove the 5 screws holding the compressor haves together. Remove the four screws holding from the top of the comp. head. Replace the tube gasket and reassemble.
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Compressor leaking air after it initially built up pressure and automatically turned off

Kenneth from Grimes, Iowa

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Wrench (Adjustable)
Parts Used:
Z-D24819, N134023, N044359
There was an air leak after the compressor came to pressure and automatically shut off. This caused the compressor to cycle on and off even though no air was being used by the tool. The leak appeared to be coming from near the compressor head near the aluminum cooling tube and seal. I replaced both the tube and seal, but the leak was still there. It turns out, there is a small hole in the compressor head that is part of the compressor design. The leak turned out to be caused by a faulty check valve. The check valve is located at the end of rubber tube that connects between the aluminum cooling tube and the air tank. The check valve is only supposed to allow air flow into the tank and mine was allowing airflow back into the compressor. I replaced the check valve and hose clamp and that fixed the problem. I also applied teflon tape to the treads of the new check valve to insure the threads sealed when tightening the check valve into the tank.
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Air Leak above 60 psi

David from Apalachin, New York

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Socket set
Parts Used:
Z-D24819, N044359, N017592SV, A03865
Disassembled compressor cylinder, replaced tube seal, gaskets and valve plate, reassembled. There was a YouTube video from eReplacementParts available if necessary. Some of the screws in the housing were in deep pockets and required torx driver with long shafts, but otherwise simple and straightforward. The location of the air leak at the tube seal was easy to diagnose once the housing was disassembled, by pressurizing and listening for the leak. Over time, heat will degrade the seal, fairly common problem for this compressor.
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Air leak on outlet side of compressor

Edward from Deer Park, Washington

2 of 2 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
N134023, N044359
R&R outlet hose and seal. A bit challenging to determine how to get access but straightforward after that. Leak fixed holds pressure for weeks now.
First remove gauge housing, 2 screws. Trick for access is to remove 2 small screws locking compressor housing to tank and sliding it sideways to remove it. Then 4 Torx head screws and the plastic housing splits allowing access.
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Access to one of the torx screws holding the cover together

Jay from Camden, South Carolina

2 of 2 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Socket set
Parts Used:
N044359, CAC-1206-1, N286039
I had to \'make\' a long torx screwdriver to access one of the screws holding the top plastic housing halves together. I used a piece of brass bar, bored a hole in one end to receive a torx bit of the right size and then used a vice to squeeze the sides of the bored area to hold the torx bit in place in order to disassemble then reassem ble the plastic housing. (I also used plumber\'s putty to make sure the bit did not fall out.) It would have been good to have known what size and length screw driver to have before beginning the repair. Everything else was straight-forward.
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Model Cross Reference

This part works with the following models:
ERP Number: ERP12522478
Manufacturer Part Number: N044359
Brand Model Number Description
DeVilbiss 3JR69 Compressor - Hand-Carry Compressor
DeVilbiss 3JR69A Compressor - Hand-Carry Compressor
DeVilbiss 3JR70 Compressor - Compressor
DeVilbiss 4YD76 Compressor - 50111
Delta 66-202 Compressor - Delta 66-202 Type-1 Compressor
Delta 66-500 Compressor - Delta 66-500 Type-0 Compressor
Delta 66-501 Compressor - Delta 66-501 Type-1 Compressor
Craftsman 919-15204 Compressor - A 2.0hp 4g Pc Um 1stg 120
Craftsman 919-15212 Compressor - A 2.0hp 3g Hd Um 1stg 120
Craftsman 919-15214 Compressor - A 2.0hp 4g Pc Um 1stg 120
Craftsman 919-15216 Compressor - Compressor
Craftsman 919-15235 Compressor - A 2.0hp 0g Nt Um 1stg 120
Black and Decker 919-15316 Compressor - Compressor / Nailer
Craftsman 919-16504 Compressor - A 2.0hp 4g Pc Um 1stg 120
Craftsman 919-16524 Compressor - A 2.0hp 4g Pc Um 1stg 120
Craftsman 919-16528 Compressor - A 2.0hp 6g Um Pc 1stg 120
Craftsman 919-16536 Compressor - A 2.0hp 6g Pc Um 1stg 120
Black and Decker 919-16537 Compressor - 1 Horse Power Compressor
Black and Decker 919-16538 Compressor - 1 Horse Power Compressor
Black and Decker 919-16644 Compressor - 3.0 Horse Power 15 Gallon Compressor
Craftsman 919-16714 Compressor - A 2.0hp 15g Hp Um 1stg 12
Craftsman 919-16716 Compressor - A 2.0hp 15g Hp Um 1stg 12
Craftsman 919-16724 Compressor - A 3.0hp 15g Hp Um 1stg 12
Craftsman 919-16725 Compressor - A 3.0hp 15g Hp Um 1stg 12
Black and Decker 919-16726 Compressor - 1.5 Horse Power Compressor
Black and Decker 919-16727 Compressor - 1.5 Horse Power Compressor
Black and Decker 919-16737 Compressor - Compressor
Black and Decker 919-16738 Compressor - Compressor
Craftsman 919-72411 Compressor - A 2.0hp 0g Nt Um 1stg 120
Black and Decker 919-72412 Compressor - 3.0 Horse Power 15 Gallon Compressor