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.
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★★★★★
★★★★★
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
★★★★★
★★★★★
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 repair
easy repair, parts were just what I needed. Arrived on time
Guest - July 15, 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
★★★★★
★★★★★
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
★★★★★
★★★★★
All went well.
It was a gasket, let's not get too excited.
Larry - December 25, 2021
Verified Purchase
★★★★★
★★★★★
the gasket fit perfectly
installed the new gasket sealed up the air.
Chris - January 19, 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
★★★★★
★★★★★
exact replacement
Worked perfectly, fit exactly like it should with no issues!
Guest - April 1, 2022
Verified Purchase
★★★★★
★★★★★
fix it
got the parts and were up and working again
Guest - November 15, 2023
Verified Purchase
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Remove the four screws from the top cap and remove it. Remove what is left of the head valve piston and clean out the entire cylinder. Oil the internal parts. Install the new head valve piston, then install the large o-ring and the small o-ring. Remove the packing (Gasket), then clean the area where it is installed. Then place it where it
... Read more goes. Then install the top cap with the four screws.
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 t
... Read moreightened screws.
9. Attached air hose and test fired the stapler.
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 t
... Read morehe many parts you\'ve helped me with over the years.
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
... Read moreand nailer now works like new.
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.
