This replacement o-ring is a high quality item that is sourced from original equipment manufacturer for use on Porter Cable nailers. This o-ring provides an air-tight seal for the piston driver assembly. Over time o-rings tend to shrink, become brittle and crack allowing for air leaks eventually requiring replacement. Please note one durable rubber o-ring is included per order.
Troubleshooting
This part works with the following brands:
Porter Cable
This part works with the following products:
Nailer
Part# 908890 replaces these:
908890,
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Customer Part Reviews
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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(5 Reviews)
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★★★★★
★★★★★
seem to always have to parts I need
you nearly always have the parts I need, even tools from the '70s! Not all but what I needed.
Guest - April 14, 2020
Verified Purchase
★★★★★
★★★★★
everything fit
parts fit great
i order my parts by phone
have person who takes the order, speak loud and slow,and repeat the order ,before hanging up,,
most of the time ,they are very good
Mike - January 19, 2022
Verified Purchase
★★★★★
★★★★★
Successful repair
The parts I ordered were exact replacements needed to repair my Porter Cable 16 gauge nailer. I purchased it in December of 2000 and it has had a lot of use. I was concerned that I would have to throw it away. These parts enabled me to get the nailer working as good as new again!
Guest - March 28, 2022
Verified Purchase
★★★★★
★★★★★
The customer service that I received over the phone was great. The gentleman that helped me was very knowledgeable.
The three parts we ordered arrived on time and worked perfectly.
Guest - August 31, 2022
Verified Purchase
★★★★★
★★★★★
Parts worked as described. Fast shipping
Replacement nail gun bump stop.
Guest - March 21, 2023
Verified Purchase
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This nailer is about 17 years old and has seen a lot of use. The last time I used it is work for a couple of trigger pulls and then began leading air through the top vent and stopped driving. I did some research on the repair and then went to the manufactures web site, but they no longer carried any parts. All the parts I needed I got fro
... Read morem eReplacment parts.
Disassembly was fairly simple. The piston was stubborn to remove but a sharp rap on a wooden block did the trick. Checked all the parts for damage and found that the spring bumper was broken in several places. Ordered that part and replaced all the seals since the unit was apart. Recommend lubricating each seal and its mating part before reassembly. A good cleaning of the tool is also recommended along with oiling other areas with moving parts. Works great. Recommend about 80-85 psi when operating brad and finish nailers.
Removed the cylinder cap, removed the old gasket, removed the o-ring from the piston and installed the new one. Placed the new gasket on the gun and installed the cylinder cap.
Removed the four allen head screws from the cylinder cap and removed it
Removed the cylinder and cleaned the inside of the gun
Installed all of the o-rings, piston stop and gasket
Oiled the insides of the gun
Replaced the cylinder cap
Disassembled the trigger and then removed the trigger valve from the body of the gun using a socket. I replaced all of the O-rings in the trigger area and lubricated them with the oil that comes with the gun. I then reassembled the valve and screwed it back into the gun body. I reassembled the trigger making sure that the safety worked
... Read moreas it is designed to. The gun worked properly after the repair and continues to at this point. I am satisfied that the O-rings were the cause of the problem.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP18989619
Manufacturer Part Number: 908890
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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