This is an authentic OEM sourced replacement part designed for use with Senco staplers. This o-ring provides an air-tight seal for valve assembly. Over time this o-ring will shrink, become brittle and crack allowing for air leaks. At that time it should be replaced. It is made out of rubber and it is sold individually. Replacing this item you would need hex key/allen wrench and pliers to replace this item.
Sorry, we couldn't find any existing reviews that matched. Try using some different or simpler keywords.
★★★★★
★★★★★
Great Item
Great item that fit perfectly and came quickly
Guest - September 4, 2019
Verified Purchase
★★★★★
★★★★★
part Worked well
What is the right part I ordered part was easy to install stapler worked well
Guest - November 11, 2019
Verified Purchase
★★★★★
★★★★★
Perfect part for the job.
I needed a seal that was not available from the manufacturer anymore. You had the part and sent it promptly. Thank you!
Guest - February 28, 2022
Verified Purchase
★★★★★
★★★★★
Worked great
The part was relatively easy to locate, was correct, and dropped right into place.
Guest - July 7, 2022
Verified Purchase
★★★★★
★★★★★
Easy repair. Dont forget to grease the O rings lightly.
The white color was different from the original red, no problem. They snapped right in and with the O ring replacements, both Senco L series air staplers work better than new. My grandkids, 5 yrs, watched the rebuild assembly. We tested both 16 gage staplers on a scrap 2x4. To me, there was no visible staplers, and only an imprint from the hammer. 5 min later, one of the twins held up the board to the light, and found the staples sparkling. I said, better than new, as they were embedded an 8th inch.
Guest - December 18, 2024
Verified Purchase
★★★★★
★★★★★
worked as expected
Made my 40+year old Senco stapler work again, simple repair.
Guest - April 15, 2025
Verified Purchase
★★★★★
★★★★★
The top seal fit perfectly my nail gun. I have no idea where the other O-ring fits into the gun sense I do not have a schematic. Senco LS-two.
Replacement parts for my Senco nail gun LS-2, only the top sealed fit having no schematic. I do not know where the two other parts ordered fit.
Guest - February 28, 2023
Verified Purchase
Questions & Answers
?
Our customer Service team is at the ready daily to answer your part and product questions.
Be the first to ask our experts a question about this part!
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Using a hex wrench I removed the top air flow vent and the top cover allowing me to access the interior of the pin gun. I could see that the inner seal was broken. I looked at the diagram from ereplacement.com and determined what part it was I needed.
Just to be sure.... I called their support service and talked with a rep who confi
... Read morermed the part that I should order. I also purchased an spare and an o ring that may need to be replaced in the future. They mailed the parts to me... about a week. I did a through cleaning of all parts as I reassembled to be sure of no small broken fragments that may affect my repair. Slid the seal back onto the retainer... no need to remove any other parts.
Everything went well and I now am back in business.
It was nice to have the support number to call to confirm parts!
I decided to clean out and replace the seals in the gun. Cleaned all the internal moving parts , replaced all the o-rings and the valve assembly, put it all back together and It works fine now.
Lay out all the new parts and as you remove the one old one replace it with the new one.
Did you find this story helpful?
Thank you for voting!
30 year old pin nailer air leak and would not shoot nails
Remove the top of the nailer, noticed the air seal was in many pieces. Ordered parts and replaced seal, put all parts back together (no parts left over) and game on, started using nailer right away. Great service from eReplacements.
Removed for allen screws from the top cover and removed it
Remove the damaged seal and installed the new one
Cleaned the entire stapler and oiled it
Replace the top cover
1. Removed the top 4 Allen screws.
2. Slid out the piston.
3. Cut out the old torn seal.
4. Put the new seal over the piston shoulder.
5. Put it back into the cylinder.
6. Replaced the cover and the Allen screws. Done!
Did you find this story helpful?
Thank you for voting!
Leaking air from top of pin nailer. No pressure to operate.
Remove the cylinder cap assembly.
Remove the broken seal.
Install the new seal.
Clean the entire inside of the cylinder, and oil it.
Replace the cylinder cap assembly.
Did you find this story helpful?
Thank you for voting!
Stapler wouldn\'t shoot staples. the driver wouldn\'t cycle.
Wasn\'t positive that I ordered the right part but it ended up being correct. I removed the top of the stapler. Looked in it and found the defective seal. I removed it and installed the new one, then cleaned and oiled the inside of the gun. I then replaced the top of the stapler. The stapler is working as it should now.
Did you find this story helpful?
Thank you for voting!
< Prev
1
2
3
Next >
✖
Stock Status
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.
✖
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.
✖
[{"position":0,"name":"Home","title":"Home","url":"/"},{"position":1,"name":"Nailer","title":"Nailer","url":"/parts/power-tool/nailer/"},{"position":2,"name":"Seal or Gasket","title":"Seal or Gasket","url":"/parts/power-tool/nailer/seals-and-gaskets/"},{"position":3,"name":"LB5012","title":"LB5012","url":""}]
_WW_1.gif "Part Location Diagram of LB5012 Senco Seal")
_WW_1.gif "Part Location Diagram of LB5012 Senco Seal")
