Easy
15-30 minutes
Genuine Bostitch replacement part, this item is sold individually.
This seal is placed on the the cylinder of the tools shown below.
Its purpose is to keep air from leaking from inside the tool.
This part can become brittle and stretch.
When this happens it is advise to obtain part number RBK8 Rebuild Kit.
This kit will replace the o-rinds and gaskets to bring your tool back to excellent working condition.
Cylinder Seal N70155
OEM part for: Bostitch, DeWALT
Part Number: N70155
$5.54
In Stock
Order within the next 6 hours and your part ships today! 
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Product Description ?
- O.D. 2-9/16 I.D. 2-5/16" Height 7/16" Width 1/4"
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This part will fit the following 34 machines
Bostitch
N80SBM Pneumatic Stick Nailer View Diagrams & Manuals
N80SB Pneumatic Stick Nailer View Diagrams & Manuals
N80CBMLPAL Coil-Fed Pneumatic Nailer View Diagrams & Manuals
N80CB-1ML Coil-Fed Pneumatic Nailer View Diagrams & Manuals
N80CB Coil-Fed Pneumatic Nailer View Diagrams & Manuals
SDN11RH Pneumatic Stick Nailer View Diagrams & Manuals
SDN11PTB Pneumatic Stick Nailer View Diagrams & Manuals
N79WW Pneumatic Stick Nailer View Diagrams & Manuals
N79RH Pneumatic Stick Nailer View Diagrams & Manuals
N79PT Pneumatic Stick Nailer View Diagrams & Manuals
N95RHN Pneumatic Stick Nailer View Diagrams & Manuals
N90PT Pneumatic Stick Nailer View Diagrams & Manuals
N70CBPAL Coil-Fed Pneumatic Nailer View Diagrams & Manuals
N70CBM Coil-Fed Pneumatic Nailer View Diagrams & Manuals
N80S Type 0 Stick Nailer View Diagrams & Manuals
N80C Type 0 Coil-Fed Nailer View Diagrams & Manuals
N80CB-1 (Type 0) Angle Coil Nailer View Diagrams & Manuals
N80CB-HQ (Type 0) Coil-Fed Nailer View Diagrams & Manuals
RN90PLEX (Type 0) Round Head Duplex Na View Diagrams & Manuals
N71C (Type 0) Coil-Fed Nailer View Diagrams & Manuals
N70CBM (Type 0) Coil-Fed Nailer Power Tool View Diagrams & Manuals
N79PT (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
N79RH (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
N79WW (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
N80CB-1ML (Type 0) Coil-Fed Nailer Power Tool View Diagrams & Manuals
N80CB (Type 0) Coil-Fed Nailer Power Tool View Diagrams & Manuals
N80CBMLPAL (Type 0) Pallet Nailer Power Tool View Diagrams & Manuals
N80SB (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
N80SBM (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
N90PT (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
N95RHN (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
SDN11PTB (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
SDN11RH (Type 0) Stick Nailer Power Tool View Diagrams & Manuals
DeWALT
DW325C (Type 1) 15 D Coi Frame Nailr View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Nailer Parts
Customer Part Reviews ?
Average Rating (out of 5):
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Worked perfectly
I was surprised to find this seal for my very old nail gun. Shipping was faster than promised and I’m back in business nailing. Thumbs up!!
Guest -
July 19, 2023
Verified Purchase
Repair
It worked
Guest -
June 7, 2023
Verified Purchase
Very easy to install
Part was ship very quickly
Guest -
March 23, 2023
Verified Purchase
No fuss repair
I purchased a seal for my pneumatic nailer and was perfect fit. Repair took about 10 minutes. Will order parts here again.
Guest -
November 9, 2021
Verified Purchase
Nailer
Great replacement part, at a great price, arrived in under a week. It fit and worked perfectly.
Larry -
December 16, 2020
Verified Purchase
the right part easy to install
my nail gun works once again thank you.
Guest -
March 30, 2020
Verified Purchase
Easy repair!
My framing nailer is over 20 years old and this part saved me over $200.00 to buy a new nailer.
Guest -
February 8, 2020
Verified Purchase
Perfection
Fit like a glove perfect
Guest -
November 9, 2019
Verified Purchase
Quick and easy parts.
Your web site is very easy to use with detailed exploded views of the equipment you have parts for. It also helped with re-assembly of the nail gun I got the part for. The part arrived quickly and the ordering process on line was very easy. Other vendors could take a lesson from you.
Guest -
October 7, 2019
Verified Purchase
bigjon
part arrived on time and fit perfectly, could not ask for anything more
Guest -
September 27, 2019
Verified Purchase
t
t
t -
t days ago
Verified Purchase
eReplacementParts Team
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Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
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We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Cylinder Seal
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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.
Bostitch N80SB canister framing nailer was losing air at the top and wouldn't shoot nails
howard - November 26, 2015
👍 21 of 21 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, allen wrench
Parts Used
Removed the 4 screws and removed the top of the nailer.. could see that the cylinder seal was broken. It was easily removed by hand and replaced.. put the top back on and the nailer worked like new again.. very simple repair and easy diagnosis of the problem.
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Seal busted / Dry rotted
Allen - November 28, 2016
👍 5 of 5 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench
Parts Used
1. Removed the 4 screws off of the head of nail gun.
2. Removed head.
3. Replaced seal at top of cylinder
4 Replaced head
5.Tighten 4 screws back down.
2. Removed head.
3. Replaced seal at top of cylinder
4 Replaced head
5.Tighten 4 screws back down.
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Air from top framing gun
Andre - June 7, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen Wrench
Parts Used
The diagram on the web site was very helpful in deciding which part I needed. I had ordered O rings also and replaced them while I had the gun in pieces. A youtube video was also helpful.
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Air leaking continuously
Geryl - May 13, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
30-60 minutes
Tools Used
, hex wrench, small hammer, included punch
Followed the simple instructions included with the parts. The only hiccup was that one drawing on the trigger kit, sequential pointed to the wrong pin to remove the trigger, but that became obvious when I looked closely at the tool. The hint to use compressed air to expel the old trigger valve was valuable.
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The nailer was leaking air and would not drive a nail.
Teddy - April 24, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Scotch-brite to clean the piston area.
I had a o-ring seal kit on the shelf. I found the old seal stuck and gunked up. I had to use scotch-brite to clean that surface before installing the new o-rings
For some reason I did not have a piston stop and I don't know how this nailer ever worked without it? After cleaning everything up, lubricating and installing all the parts, the nailer worked fine.
Thanks
For some reason I did not have a piston stop and I don't know how this nailer ever worked without it? After cleaning everything up, lubricating and installing all the parts, the nailer worked fine.
Thanks
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Leaking air
Larry - February 4, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Power Drill
Removed the top cap of the nail gun.
Removed all of the worn and broken parts
Completely cleaned the internal parts and oiled them
Replace the top cap of the nail gun
Removed all of the worn and broken parts
Completely cleaned the internal parts and oiled them
Replace the top cap of the nail gun
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Seal blew after 20 years
Penni - December 2, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen Wrench
Parts Used
Removed four allen head bolts gently separated head removed blown seal . Put thin coat of Vaseline on new seal , replaced seal . Replaced allen head bolts . Done
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Seal on the nailer broke out.
Jeff - July 28, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Wrench Set, Allen wrench
Parts Used
Removed the top of the nailer and then replaced the seal, put it all back and now the nailer works again. I did not have a manual on this nailer but figured out what I needed from your website.
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Air was blowing by at the head
Martin - September 13, 2018
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench
Parts Used
Removed top cap,, 4 Allen cap.srews, careful.not to dage gasket, rremoved all the old dry rotted clyunder seal. Wiped out the debris.. installed new seal.,and put the head with 4 Allen cap screws back together..
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Leaking air from top. Piston would not return.
Joseph - September 3, 2018
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen Wrench
Parts Used
Used Allen Wrench to remove top of coil nailer. Pulled it apart, cleaned and oiled and replaced damaged parts, But discovered that I also had 2 additional broken parts which were one bumper ring and piston stop. Total repair parts and shipping approximately $20 and works like new. Thanks, Ereplacement parts!!
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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.
