The o-ring fits inside the valve piston. This part is available individually and is made of rubber. It is a genuine OEM sourced part which is specially designed for use with Porter Cable nailers and staplers. A screwdriver and an allen wrench may be helpful when replacing this part. It will require replacing if it becomes broken.
O-ring 886555
OEM part for: Porter Cable
Part Number: 886555
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Frequently Purchased Together ?
Compatibility
This part will fit the following 6 machines
Porter Cable
This item works with the following types of products:
- Nailer Parts
- Stapler Parts
Questions & Answers ?
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Does this fit my product?Questions & Answers for O-ring
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.
Finish Nailer leaker air through the top vent
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Hex wrenches
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.
Nailer won't fire, only leaked air while the trigger was depressed in the trigger area
Tool Type
Nailer
Difficulty
Easy
Time
30-60 minutes
Tools Used
Socket set, Wrench Set, Dental Pick
Leaking air at the top of the nailer.
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
2. Removed the broken piston stop.
3. Put in all new o-rings.
4. Reassembled the nailer.
Leaking air and not firing
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
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
Piston stop broke
Tool Type
Nailer
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver
Driver would not return. Upon examination, the plastic stop had completely deteriorated.
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Allen wrench
Parts Used
2) Unscrew four allen bolts on top of nailer
3) Remove top and internal parts that come out when top is removed. Note the order and orientation of the parts.
4) Lube and replace O rings
5) Reassemble in reverse order.
6) Evenly tighten allen screws
7) Reconnect air and check operation at minimum air pressure prescribed on feeder
8) Get back to work
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Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.