Medium
15-30 minutes
An authentic OEM sourced replacement part which is specially designed for use with Porter Cable nailers and staplers. The purpose of this part is to provide an air-tight seal between components, over time it may wear out and begin to crack eventually requiring a replacement. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware.
O-ring 883942
OEM part for: Porter Cable
Part Number: 883942
$4.99
In Stock
Ships within 1 business day 
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Compatibility
This part will fit the following 19 machines
Porter Cable
RN175 Type 1 Roofing Nailer View Diagrams & Manuals
FN250A Finish Nailer View Diagrams & Manuals
FC350 Type 1 Clipped Head Framing Nailer View Diagrams & Manuals
FC350 Type 2 Clipped Head Framing Nailer View Diagrams & Manuals
FC350 Type 3 Clipped Head Framing Nailer View Diagrams & Manuals
DA250 15 Gauge Angle Nailer View Diagrams & Manuals
DA250A 15 Gauge Angle Nailer View Diagrams & Manuals
FR350 Type 1 Round Head Framing Nailer View Diagrams & Manuals
FR350 Type 3 Round Head Framing Nailer View Diagrams & Manuals
MS200 Type 1 16 Gauge Medium Crown Stapler View Diagrams & Manuals
MS200 Type 2 16 Gauge Medium Crown Stapler View Diagrams & Manuals
NSS150 Super Narrow Crown 18 Gauge Stapler View Diagrams & Manuals
FN200 Type 1 2" Finish Nailer View Diagrams & Manuals
FN250 Type 1 2-1/2" Finish Nailer View Diagrams & Manuals
FR350 Type 2 Round Head Framer View Diagrams & Manuals
DA250 (Type 1) Finish Nailer Power Tool View Diagrams & Manuals
DA250A (Type 1) 2 1/2in Angle Nailer Power Tool View Diagrams & Manuals
FN250A (Type 1) 2 1/2in 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
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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.
Air leak at trigger
Bruce - April 27, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Adjustable Wrench, Small pick
Removed trigger assembly and replaced all o-rings and spring
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Trigger on gun leaked
Lou - December 28, 2022
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Wrench Set, Allen set
Removed trigger, replaced all o-rings
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Wouldn’t retract driver
David - July 10, 2020
Tool Type
Nailer
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Wrench Set, Hammer , pin driver
Everyone said top bumper causes the problem. The bumper was shot so I replaced it. Still did the same thing. Messing with it I found that if I pulled on the trigger pin just a little bit it would let go and retract the driver. I pulled the trigger assembly out and started messing around with it. No luck. However I now noticed a slight air leak at the trigger. I purchased all new O rings and trigger pin and spring. Installed and WahLah. it works. Thanks for your help with parts. Have referred U to friends.
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Piston would not return, leaking air
KEITH - January 13, 2018
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set, Allen wrench
Removed the top cap
Replaced piston bumper and o-rings.
Installed the top cap
Replaced piston bumper and o-rings.
Installed the top cap
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FR350 framing gun was leaking air from trigger
Chad - December 8, 2017
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set
Trigger assembly is screw in type; Removed retainer and the pin that secures the trigger, removed trigger then used wrench to loosen and remove the trigger assembly.
Disassembled the trigger valve, breather valve, plunger.
Removed and replaced all the o-rings: 1x- 883831, 1x-883935, 2x- 883936, 1x- 883938, 2x- 883848, 1x- 883942, 1x-urethane retainer 890725.
Reinstalled trigger valve assembly.
Air leak is gone, nailer working great!
Disassembled the trigger valve, breather valve, plunger.
Removed and replaced all the o-rings: 1x- 883831, 1x-883935, 2x- 883936, 1x- 883938, 2x- 883848, 1x- 883942, 1x-urethane retainer 890725.
Reinstalled trigger valve assembly.
Air leak is gone, nailer working great!
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The driver wouldn't retract.
Duane - May 23, 2017
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Adjustable Wrench, Allen wrenches
1. Took nailer apart.
2. Ordered parts.
3. Cleaned nailer.
4. Installed new parts.
5. Tested nailer.
6. Complete job nailer working good as new.
2. Ordered parts.
3. Cleaned nailer.
4. Installed new parts.
5. Tested nailer.
6. Complete job nailer working good as new.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
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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.
