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Tube Seal

Part Number: N044359
Porter CableDeltaDeVilbissBlack and DeckerDeWALTBostitch
Availability: 25+ in stock
Price: $2.99
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*This part replaces obsolete part #: 1000001269 and CAC-1212.

Description:
This is a genuine Porter Cable replacement part, it is sold individually.
The purpose of the N044359 Tube Seal is to prevent an air leak.
It is placed on the outlet tube coming from the head of the compressor.
Product Information
Manufacturer: Porter Cable, Delta, DeVilbiss, Black and Decker, DeWALT, Bostitch
Product Number: N044359
Classification: Part
Weight: 0.01 lbs.
Shipping: Ships Worldwide
Repair Guides
Watch the Repair Video for Tube Seal
How to Replace the Tube Seal on an Air Compressor
Articles:
How to Replace the Tube Seal on an Air Compressor
This article will show you how to remove and install the tube seal in an air compressor....
November 18, 2014
Related Products
Compatibility

This part is compatible with the following machines:

Porter Cable
Delta
DeVilbiss
Black and Decker
DeWALT
Bostitch

Products Compatibility

This item works with the following types of products:

  • • Compressor
Questions & Answers

No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
24 of 25 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Socket set
Tube seal leak caused the compressor to cycle very often.
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 seal 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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5 of 5 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Power Drill
Tub seal was shot and leaking air not letting the compressor build pressure.
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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4 of 4 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Nutdriver
Air leaking from tube seal
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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1 of 1 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Outlet Tube - N134023
Tube Seal - N044359
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers
Air leak on outlet side of compressor
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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1 of 1 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Graphite Gasket Kit - D30139
Valve Plate With Lower Gasket - N017592SV
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers, Nutdriver, 1/4 drive ratchet
blown head gasket
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.

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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1 of 1 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Hose Clamp - CAC-1206-1
Tube Seal - N044359
Check Valve - D27022
Drain Valve - N286039
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Socket set, Extra-long neck torx screwdriver
Access to one of the torx screws holding the cover together
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 reassemble 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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2 of 3 people found this instruction helpful
Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Repair Difficulty:
Medium
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, silicone gasket sealer
Compressor was leaking at the exhaust tube
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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Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Drain Valve - N286039
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Wrench Set, Nutdriver
Unit was leaking air from compressor seal and drain valve seal
Watched the YouTube video on how to replace the compressor seal and it was as easy as the instructor showed. 45-60 minutes of labor and the compressor works like new. Parts were perfect. eReplacements was easy to do business with, the parts arrived in the time frame promised and I couldn't be happier.
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Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Repair Difficulty:
Hard
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Wrench Set, Nutdriver
Tube seal rotted
Removed all plastic housings, put soap on the seal to get it over the tube. Reassembled, worked like new.
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Thanks for voting and helping fellow customers!
Tool Type:
Compressor
Parts Used:
Tube Seal - N044359
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Wrench Set, Torx head screwdriver (unsure of size)
O-Ring around the pressure tube to the tank blew out at the pump head.
Compressor is probably 12 years old...and I use it all the time...so, no surprise really that it went south. Replacing the special o-ring requires the 4-bolt head to be removed. Removing the head will very likely damage the very delicate head gasket. So I replaced that too. The most difficult part of the repair was determining the proper orientation of the pressure tube when reassembling, but, a person can figure that out by spatially rotating in your noggin. The other part that required some "figuring" was locating the 5 Torx head screws that hold the two halves of the air pump case assembly and the 2 large phillips head screws that prevent the air pump assembly from "sliding out" of the brackets on the top of the tank.
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Discussion
Discussion for Tube Seal - ( N044359 )
Discussion is closed. To ask our experts a question about a part, use the Q&A feature.
Question: Compressor Not Building Up Press...

1219989

howdy folks, I have a little dewalt air compressor model d55141 type 1 serial 2768035197 that will not pump past 120 p.s.I. I ordered a new switch fot it part noo3306sv and it is rated for 150 cut out pressure. I was told that this is the correct switch for it, but it just can't get past 120.is there another switch rated at 120 p.s.i.that I can use?. thank you in advance for any help you may be able to give me. grasswhacker
Hi,
Are you saying that it won't pump up past 120 p.s.i. before it shuts off or that it will continually run but not pump past 120p.s.i?
howdy, I'm sorry for not making myself clear. the compressor will pump up to 120 p.s.I.just fine but cannot pump past that and will continually run. thank you grasswhacker.
Hi grasswhacker,
There could be a number of things causing the problem in that model.I'll give them in the order of the most common.
1.The compressor uses a teflon piston ring and this could be damaged.
2. Check the reed valves in the cylinder head and see if they are worn or damaged.
3. Check the red tube ring and see if it is damaged.This red ring is where the tube come out of the cylinder head.
These three things will give you a good place to start in troubleshooting the compressor.Hope that helps.Good luck.
Tinker
Question: Compressor Keeps Running

hunters53066

I keep blowing the O ring in the motor and the compressor keeps running and builds no presser in the tank is there anything i can do to fix this?
Hi hunters53066,
I'm not sure what you mean when you say you keep blowing the o-ring in the motor.Generally If the compressor runs but does not build up pressure you most likely have a problem in the reed valves or the teflon piston ring is bad.The pump will have to be disassembled to find the true problem.Hope this helps.Good luck.
Tinker
there is a red O ring by the reed valve that keeps blowing out and not sure why I think it might get hot and melt but i wasn` t using it at the time and it just started running and would not stop
Hi hunterers53066,
That is the input pipe seal and you will need that to seal the pipe to the cylinder head.If you don't have that then you won't build pressure.Order a couple and have one for a spare. You will have to remove the cylinder head to replace it.Hope that helps.Good luck.
Tinker
How difficult is it to replace an do you need new gaskets on the cylinder head?
Question: Tube Seal

jmv

How do you install the tube seal?
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  • Worked as expected
    Arrived on expected date, fixed my air compressor. This may be the part you need if your compressor has low presser.
    Guest - May 27, 2019 Verified Purchase
    Verified Purchase
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