Easy
15-30 minutes
This is a genuine OEM sourced replacement part designed for nailers/staplers. This gasket provides an air-tight seal for the end cap. Over time this gasket will shrink, become brittle and crack allowing for air leaks. At that time it should be replaced. It is made out of composite material and it is sold individually.
Replacing this item you would need a hex key/allen wrench.
Packing P0590000400
OEM part for: Bostitch, Porter Cable
Part Number: P0590000400
$5.19
In Stock
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This part will fit the following 16 machines
Bostitch
SB-2IN1 Finish Stapler View Diagrams & Manuals
SB-1850BN Finish Stapler View Diagrams & Manuals
SB-1842BN Finish Stapler View Diagrams & Manuals
SB-150SX Finish Stapler View Diagrams & Manuals
SB-125BN Brad Nailer View Diagrams & Manuals
SB-100SX Pneumatic Stapler View Diagrams & Manuals
SB-100SX (Type 0) Pneumatic Stapler Power Tool View Diagrams & Manuals
SB-125BN (Type 0) Brad Nailer Power Tool View Diagrams & Manuals
SB-150SX (Type 0) Finish Staplr 1-1/2 Power Tool View Diagrams & Manuals
SB-1842BN (Type 0) Finish Tool Power Tool View Diagrams & Manuals
SB-1850BN (14065000 and Higher) Finish Tool Power Tool View Diagrams & Manuals
SB-1850BN (17179001) Finish Tool Power Tool View Diagrams & Manuals
SB-2IN1 (Type 0) Nailer Power Tool View Diagrams & Manuals
SB-2IN1 (Type 1) Nailer Power Tool View Diagrams & Manuals
Porter Cable
BN200SB (Type 1) 18-Gauge Brad Nailer View Diagrams & Manuals
BN200SB (17179001) Finish Nailer Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Stapler Parts
- Nailer Parts
This part replaces obsolete part #: JA1151C1
Customer Part Reviews ?
Average Rating (out of 5):
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fix it
got the parts and were up and working again
Guest -
November 15, 2023
Verified Purchase
exact replacement
Worked perfectly, fit exactly like it should with no issues!
Guest -
April 1, 2022
Verified Purchase
Easy repair if my Brad nailer
Exact replacement gasket needed for my Bostich Brad nailer. Fast delivery; would definitely use ereplacementparts again!
Guest -
February 28, 2022
Verified Purchase
the gasket fit perfectly
installed the new gasket sealed up the air.
Chris -
January 19, 2022
Verified Purchase
All went well.
It was a gasket, let's not get too excited.
Larry -
December 25, 2021
Verified Purchase
Great package and service.
My two tools work as designed. Parts and data sheets made the job easy.
Thank you.
Guest -
November 28, 2019
Verified Purchase
Bostitch Nail Gun Repair
I purchased several o-rings and gaskets for my Bostitch nail gun. I also used the Bill of Materials on your website to identify the placement of all the new parts. Everything was received in a timely manner and now I have a working nail gun. Thanks.
Richard -
October 1, 2019
Verified Purchase
easy repair
easy repair, parts were just what I needed. Arrived on time
Guest -
July 15, 2019
Verified Purchase
Bostitch Brad Nailer Repair
The repair of my Bostitch brad nailer was made much easier with the suggested parts list from ereplacement parts.
Guest -
June 24, 2019
Verified Purchase
Easy fix
Didn't know what model nail gun I even had.
The web site and pictures were great. Thank
you for your service and speed on getting the
right parts fast.
Guest -
May 14, 2019
Verified Purchase
t
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t days ago
Verified Purchase
eReplacementParts Team
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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.
Nailer Head Valve Body broke
Randy - May 21, 2022
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, allen wrench
Parts Used
Although your website shows the Nailer Head Valve Body for my Bostitch SB-125BN nailer as being discontinued by the manufacturer, and with your quick shipping of the gasket and o-ring I was able to fix my nailer like it was brand new in under 15 minutes. Glad I pulled it back out of the trash and pulled that string! Thank you guys for the many parts you've helped me with over the years.
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replacement of gasket
Chris - January 21, 2022
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, painters tool
Parts Used
removed top air chamber cleaned the surfaces for the new gasket, installed new gasket . works great.
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Broken end cap
raymond - November 7, 2018
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench
Parts Used
Remove 4 allen screws and the cracked end cap and gasket. Install the new gasket and end cap.
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Stapler would not fire
Gilbert - August 22, 2018
Tool Type
Stapler
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Allen Wrench
1. Removed end cover
2. Located broken head valve
3. Removed broken head valve
4. Cleaned and lubricated internal cylinder wall
5. Installed new o-rings onto new head valve and applied lube
6. Reassembled head valve into cylinder
7. Installed new top packing (gasket)
8. Installed end cover and tightened screws.
9. Attached air hose and test fired the stapler.
2. Located broken head valve
3. Removed broken head valve
4. Cleaned and lubricated internal cylinder wall
5. Installed new o-rings onto new head valve and applied lube
6. Reassembled head valve into cylinder
7. Installed new top packing (gasket)
8. Installed end cover and tightened screws.
9. Attached air hose and test fired the stapler.
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Nailer failed to fire when trigger was pulled.
Bob - June 13, 2018
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
1. Remove four allen screws in top head cap.
2. Remove worn or damaged head value.
3. Replace old head value with new head value along with new O-rings just to be sure.
4. Remove old packing gasket and install new packing.
5. Place head cap on new packing gasket and re-install four allen screws.
6. Test fire and nailer now works like new.
2. Remove worn or damaged head value.
3. Replace old head value with new head value along with new O-rings just to be sure.
4. Remove old packing gasket and install new packing.
5. Place head cap on new packing gasket and re-install four allen screws.
6. Test fire and nailer now works like new.
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Leaking air. Valve piston had piece broken off
Kevin - December 15, 2017
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Allen wrench
Replaced valve piston, gasket and O-ring and solved the issue.
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Top cap cracked
paul - May 23, 2017
Tool Type
Stapler
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
Parts Used
Removed the four screws from the top cap and removed it and the gasket. Cleaned the gasket surface. Installed it and the new cap
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Bad o-rings
Ray - May 2, 2017
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Wrench Set, Adjustable Wrench
Remove the parts. Clean and replace. Tested. Works great!
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Wouldn't shoot staples
Vurtice - April 28, 2017
Tool Type
Stapler
Difficulty
Easy
Time
15-30 minutes
Tools Used
Adjustable Wrench, Allen wrench, scraper
Dissemble, scrape gasket stuck on housing and cap, replace all o-rings and parts , reassemble, oil and test
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Driver broke at the end
Peter - December 7, 2016
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Wrench Set, Allen wrench
Parts Used
Remove the four screws that hold the cap on
Remove the old gasket and clean the area
Remove the old driver and insert the new one
Oiled the inner parts
Place the gasket on the housing
Screw the cap back on
Remove the old gasket and clean the area
Remove the old driver and insert the new one
Oiled the inner parts
Place the gasket on the housing
Screw the cap back on
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OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
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.
