Easy
15-30 minutes
This is an authentic item which is supplied directly from the original equipment manufacturer for use with Porter Cable nailers and staplers. It is an identical replacement for a missing or a faulty check seal that was installed on a new unit. The purpose of this component is to provide a tight seal for the cylinder, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality check seal is made of durable rubber and is sold individually.
Check Seal 886119
OEM part for: Porter Cable
Part Number: 886119
$7.22
In Stock
Order within the next 12 hours and your part ships today! 
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Compatibility
This part will fit the following 11 machines
Porter Cable
RN175 Type 1 Roofing Nailer View Diagrams & Manuals
RN175 Type 2 Roofing Nailer View Diagrams & Manuals
RN175A Roofing Nailer View Diagrams & Manuals
FN250A Finish Nailer View Diagrams & Manuals
FN250B 16 Gauge Finish Nailer View Diagrams & Manuals
NSS150 Super Narrow Crown 18 Gauge Stapler View Diagrams & Manuals
FN251 (Type 1) Flooring Nailer View Diagrams & Manuals
RN175A (Type 1) Coil Roofing Nailer Power Tool View Diagrams & Manuals
FN250A (Type 1) 2 1/2in Finish Nailer Power Tool View Diagrams & Manuals
FN250B (Type 1) Finish Nailer Power Tool View Diagrams & Manuals
NSS150 (Type 1) Super 1.5 Nc Stapler Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Nailer Parts
- Stapler Parts
Repair Videos ?
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Check Seal
Customer Part Reviews ?
Average Rating (out of 5):
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- 1
easy repair
fit perfect
Kevin -
July 24, 2023
Verified Purchase
Easy repair still didn’t work so needs more work
Came fast we will keep you in mind if needed on other time thanks
Guest -
October 10, 2022
Verified Purchase
Love the pictures of the items,very helpful
It was the wrong size 0 ring my fault
Guest -
August 31, 2020
Verified Purchase
Simple
Fit perfectly
Guest -
April 30, 2020
Verified Purchase
all parts worked but cost as much as a new nailer
all parts were right and worked well
Guest -
January 11, 2022
Verified Purchase
Air Gun
The parts diagram was difficult to follow and the replacement parts I ordered were incorrect. I wasted my money as I spent half the cost of a new air gun.
Raymond -
July 8, 2021
Verified Purchase
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t days ago
Verified Purchase
eReplacementParts Team
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Does this fit my product?Questions & Answers for Check Seal
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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.
Worn out seals and busted piston bumper
Tim - December 16, 2015
👍 3 of 4 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench
Follow video that was provided by ereplacement parts and then go from there.
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Internal parts broke
Tim - June 18, 2022
Tool Type
Stapler
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Took the nailer all apart and got on ereplacement found the parts needed, ordered them and had them in 3 days and replaced the bad parts and the stapler works like new now.
Everything went smooth from finding the parts, too ordering the parts, to shipping and assembling the parts. Will use this company again and highly recommend them
Everything went smooth from finding the parts, too ordering the parts, to shipping and assembling the parts. Will use this company again and highly recommend them
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Finish Nailer leaker air through the top vent
Conrad - March 28, 2021
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Hex wrenches
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 from 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.
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.
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No return on striker
Eric - June 6, 2020
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen Wrench,pin punch,hammer
Parts Used
Remove end of casing..... four (4) Allen screws
Remove piston & cylinder .....Pull out by hand
Remove and replace check seal
Reassemble
Remove piston & cylinder .....Pull out by hand
Remove and replace check seal
Reassemble
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Piston would not return. Just blew air
Britton - February 13, 2018
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
, Allen wrench
The parts I replaced where destroyed, so I looked at the parts list and figured how to put in the new parts I had ordered. Easy Peasy
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Quit firing nails (used Driver Kit), trigger leaked air (used Trigger kit)
John - December 11, 2017
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set
Followed directions and used YouTube video from eReplacement
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Leaking air
Gary - September 2, 2017
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
Parts Used
Removed the four screws from the cylinder cap, Removed the cylinder from the gun. Replaced the check seal. Installed all of the other good parts back on to the new cylinder
Installed the cylinder in the gun. Installed the top cap
Installed the cylinder in the gun. Installed the top cap
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Nailer not cycling.
Benny - July 22, 2017
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
Parts Used
Replaced washers and o-rings.
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Seal was bad and air was excaping
Dany - December 26, 2016
Tool Type
Stapler
Difficulty
Easy
Time
30-60 minutes
Tools Used
Wrench Set
Pulled the top of the stapler gun, replaced the seal and completed the assembly.
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Nailer would not retract driver.
Bernard - December 9, 2016
👍 1 of 2 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Hex key set
Parts Used
Removed top cover of the Porter Cable finishing nailer and removed the cylinder that houses the driver rod. I had previously replaced all of the gaskets in an earlier repair, but the driver rod would not retract and found that the check seal was the likely problem. I also noticed the driver guide was damaged during the last repair. I simply removed the check seal from the cylinder and installed the new one and put the guide on the driver and put it back in the housing. It took about three trigger pulls for the seal to begin working properly. One bit of advice for anyone doing a DIY repair on these nailers is to search YouTube for instructional videos. It makes the repairs much, much simpler.
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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.
