This is an authentic manufacturer sourced replacement part designed for use with Senco nailers/staplers. This is the seals for the piston. Over time it will shrink, become brittle and crack allowing for air leaks. At that time it should be replaced. It is made out of rubber material and it is sold individually. Replacing this item you would need hex key/allen wrench and pliers to replace this item.
Removed the top cap of the tool. Look at what could be causing the air leak. I located 3 worn seals and replaced them. The gun work like a new gun now. Note: put a little lube on the new seals
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It had a seal that dried out and I replaced the seals, put it in shape like a new one
Removed the four screws from the top cap of the stapler, took the top, then out pulled the plunger, replaced the seals put oil on them so they would go on easy then put it back together, plug air up and works like a charm it was simple. You should not have a problem just pay attention.
Removed the gun cap using an hex wrench set (American). Removed the piston and found the seal at the top of the drive pin petrified and broken into many pieces. Cleaned the entire tool with stoddard solvent, examining all of the parts for wear and fit. Replaced the piston seal after lubricating the cylinder with gun oil and silicone. I
... Read moret was necessary work the trigger rod up and down using a Kroil solvent until it worked freely. The gun was then reassembled with sufficient lubricant to make it really snotty for a while. Congrats to Senco. I\'ve owned that tool for 36 years. This is the first repaired I\'ve had to do. This has been a shop tool at my business for all of those years. Simply incredible!
Installed all the new seals I ordered. The nylon seal needed to be heated up so it would streach. I put it in a dish of water and microwaved it for one minute on high, that made it just flexible enough to get it on to the piston top.
Removed the top plate, and removed worn seal, then installed the new one. I then oiled the inside of the gun. And replaced the top plate. No more air leaks
Disassembled from the top and found the main seal in multiple pieces.
Ordered part
No instructions came with the part, and it would not stretch over the flange of the piston.
After several failed attempts, I resorted to warming it with a heat gun at which point I was able to stretch it onto the piston and seat it in th
... Read moree groove.
Reassembled and tested. Success.
Removed the screws from the top cap, then remove the cap
Remove the old seal and replace it with the new one
Oil the internal parts of the gun
Replace the top cap
Removed for screws from the cap and removed
Removed the worn seal and installed the new one
Screwed the top cap back on
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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.
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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.
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_WW_1.gif "Part Location Diagram of LB3224 Senco Seal")
_WW_1.gif "Part Location Diagram of LB3224 Senco Seal")
