Medium
30-60 minutes
Genuine Bostitch replacement part, this part is sold individually.
The purpose of this O-Ring is to create a seal around the Piston Stem of the Bostitch Floor Nail Guns shown below.
Over time O-Rings can wear and become brittle or stretched.
When your Nail Gun becomes sluggish or the Driver won't retract, it may be time to tear the Gun down and inspect all of the O-Rings and Seals.
O-ring 850143
OEM part for: Bostitch, DeWALT, Stanley, Porter Cable
Part Number: 850143
$4.99
In Stock
Order within the next 10 hours and your part ships today! 
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Product Description ?
- Dimension: .487 X .103
- Classification: Part
- Weight: 0.01 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This part will fit the following 20 machines
Bostitch
MIIIFS Stapler View Diagrams & Manuals
MIIIFN Nailer View Diagrams & Manuals
MIII812CNCT Pneumatic Tool View Diagrams & Manuals
BTFP12569 (Type 1) 2in1 Flooring Tool View Diagrams & Manuals
BTFP12569 (17280 000 and up) 2in1 Flooring Tool Power Tool View Diagrams & Manuals
MIIIFN (121530000 and Higher) Flooring Nailer Power Tool View Diagrams & Manuals
MIIIFN (17030000) Flooring Nailer Power Tool View Diagrams & Manuals
MIIIFN (Type 0) Flooring Nailer Power Tool View Diagrams & Manuals
MIIIFS (121530000 and Higher) Flooring Stapler Power Tool View Diagrams & Manuals
MIIIFS (17030000 and Higher) Flooring Stapler Power Tool View Diagrams & Manuals
MIIIFS (Type 0) Flooring Stapler Power Tool View Diagrams & Manuals
MIII812CNCT (Type 0) Misc Tool Power Tool View Diagrams & Manuals
DeWALT
DWFP12569 (Type 0) 2 in 1 Flooring Tool View Diagrams & Manuals
DWMIIIFS (Type 1) 15.5ga Floor Staplr View Diagrams & Manuals
DWMIIIFN (Type 0) 16 Ga L Cleat Flr Na View Diagrams & Manuals
DWMIIIFN (17030000 and Higher) 16 Ga L Cleat Flr Na Power Tool View Diagrams & Manuals
DWFP12569 (17152 0000 up) 2 In 1 Flooring Tool Power Tool View Diagrams & Manuals
DWMIIIFS (17030000 and Higher) 15.5ga Floor Staplr Power Tool View Diagrams & Manuals
Stanley
FMFP12758 (Type 0) 2in1 Flooring Tool View Diagrams & Manuals
Porter Cable
PCFP12561 (Type 0) 2 In 1 Flooring Tool Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Stapler Parts
- Nailer Parts
Customer Part Reviews ?
Average Rating (out of 5):
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DUFFY REPAIR
Exactly the part that I needed
Vivakanand -
September 26, 2023
Verified Purchase
Back to work
Parts worked great nail gun is working like new can’t beat the old stuff
Guest -
May 19, 2022
Verified Purchase
Excellent Service
Ordering is easy. The complete order arrived much sooner than expected, in excellent shape. eReplacement is the go-to place for my parts needs.
Robert -
October 9, 2020
Verified Purchase
Great
Arrived fast
Duc -
July 16, 2020
Verified Purchase
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t days ago
Verified Purchase
eReplacementParts Team
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Questions & Answers ?
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Does this fit my product?Questions & Answers for O-ring
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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.
Gasket was broken in half when received so I had to use old one.
Andre - September 5, 2020
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Adjustable Wrench, snap ring pliers
1 removed O-rings
2 cleaned all parts
3 used air gun oil to lube o-rings
4 replace o-rings
5 used light film of air gun oil to lube where o-ring would be sliding
2 cleaned all parts
3 used air gun oil to lube o-rings
4 replace o-rings
5 used light film of air gun oil to lube where o-ring would be sliding
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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.
