This is a Genuine Manufacturer Sourced Firing Valve Washer/Seal used on Senco Nailers/Staplers. This Plastic part fits over the cylinder to provide an air tight seal. Over time this seal would deteriorate and might crack so the tool would loose its compression.
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★★★★★
★★★★★
Nail gun parts
Perfect fit
Guest - July 31, 2019
Verified Purchase
★★★★★
★★★★★
Easy Repair
I bought the parts that your website recommended to me and that gave the highest percentage for solving my issues. After the parts were installed, my Senco roofing stapler worked great! Thanks for the parts, the advice and the quick shipping!
Guest - July 9, 2019
Verified Purchase
★★★★★
★★★★★
nail gun repair
Diagram easy reading & repair good
Guest - October 16, 2019
Verified Purchase
★★★★★
★★★★★
Perfect!
Amazing company, easy to find and order parts, secure order site, had the parts for a older Senco nail gun that was leaking air. Had great information on how to install said parts. Would use these guys again for sure. Thanks ereplacmentparts.com your awesome. P.S. Parts were delivered right on time.....
Guest - July 18, 2020
Verified Purchase
★★★★★
★★★★★
Exactly the needed part
This was the correct part and fit and functioned perfectly. I wish there had been some instructions with it for installation. I finally warmed it enough to stretch it over the rim and into the groove.it then functioned perfectly.
Doug - October 22, 2020
Verified Purchase
★★★★★
★★★★★
Excellent
Thanks
Guest - September 1, 2021
Verified Purchase
★★★★★
★★★★★
Senco M1 part and repair
Easy to find part and number. On time delivery. Part fit great. Thank you
Steven - February 2, 2022
Verified Purchase
★★★★★
★★★★★
Part was damaged when received had a scar on the outside
Was the correct part
Guest - November 17, 2021
Verified Purchase
Questions & Answers
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Thinking I would never find a seal for such an old product I was shocked that you folks actually had one. I ordered one and within just a few days it was here. Using allen wrenches I had no trouble removing the top panels and the broken plastic seal. The hard work.was trying to stretch the new seal over without breaking it. That\'s when
... Read moreI thought I should of ordered a couple of backups. There must be a special tool for this procedure. I could only get the seal about 2/3 on by hand no matter how hard I tried when I decided just do it, and used a pair of channel locks and pried it into place without damaging the seal, I hoped, put everything back together, fired up the compressor, loading the nail gun and it works to perfection. Celebrated with a cool one and toasted to you guys for making my day.
1. Removed the top of the gun.
2. Removed the old seal and the broken pieces.
3. Replaced the hard plastic seal above the piston using boiling hot water to soften it so it would slip back on.
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.
I tried some of the ideas from other people like boiling in water to make it more pliable and using oil, I found starting by hand as far as I could then using a flat tip screwdriver to stretch and push down a little at a time I could walk it around.
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 top six hex screws, removed piston,Had to boil new seal in water to get it pliable to fit it around the channel where it fit, put the screws back in and it worked perfect
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Nylon seal in head of senfast tool disintegrated. Leaking air from cylinder head.
Pulled cylinder head by removing 6 screws
Cleaned debris from cylinder
Removed rubber O-ring
Replaced O-ring
replaced nylon seal (I wondered if I could stretch it into place. It took considerable force but finally seated
replaced head and screws
Wow! It works again without leaks
Removed the top cap of the stapler.
Removed the broken seal and all of the small pieces
Thoroughly cleaned the internal parts and oiled them
Replaced the top cap
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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 LB5005 Senco Seal")
_WW_1.gif "Part Location Diagram of LB5005 Senco Seal")
