Medium
30-60 minutes
This is a genuine Hitachi replacement part, it is sold individually. Its purpose is to create a seal and prevent air leaks. Over time this gasket will deteriorate and will have to be replaced. This specific gasket is commonly used in nailers, and is compatible with the models listed below.
Gasket (a) 877334
OEM part for: Metabo HPT (Hitachi)
Part Number: 877334
$3.99
In Stock
Ships within 1 business day 
Jump To:
Frequently Purchased Together ?
Compatibility
This part will fit the following 22 machines
Metabo HPT (Hitachi)
NR83AA3 Clipped Head Framing Nailer View Diagrams & Manuals
NV83A2 Full Round Head Coil Nailer View Diagrams & Manuals
NR83A2(S) Framing Nailer, Full Head, Plastic Strip Collation (without Depth Adjustment) View Diagrams & Manuals
83AA2 Strip Nailer View Diagrams & Manuals
NR83A 3-1/4" Full Head Nailer View Diagrams & Manuals
NR83AA 3-1/4" Clipped head Framing Nailer View Diagrams & Manuals
NR83AA2 3-1/4" Clipped head Framing Nailer View Diagrams & Manuals
NV75A Nailer View Diagrams & Manuals
NV83A3 Nailer View Diagrams & Manuals
NV83A4 Nailer View Diagrams & Manuals
NR83A3S Strip Nailer View Diagrams & Manuals
NR83A3 Strip Nailer View Diagrams & Manuals
NR83AA4 3-1/4" Paper Collated Framing Nailer View Diagrams & Manuals
NR83A2 Strip Nailer View Diagrams & Manuals
NR83A5 Strip Nailer View Diagrams & Manuals
NR83A5(S)M 3-1/4 Inch Rnd Head Framing Nailer W/Out Depth Adjustment View Diagrams & Manuals
NR83A5M 3-1/4 Inch Rnd Head Framing Nailer W/ Depth Adjustment View Diagrams & Manuals
NR83AA5M 3-1/4 Inch Clipped Head Fram Nailer Accepts Paper Tape Collated Nails View Diagrams & Manuals
NV83A5M 3-1/4 Inch Coil Framing Nailer 2 Inch-3-1/4 Inch X 0.099 Inch-0.131 Inch View Diagrams & Manuals
NR83A2(Y) Nailer View Diagrams & Manuals
NR83A5(S) Nailer View Diagrams & Manuals
NR83AA5 Nailer 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):
Click to filter by ratings:
5 stars
3
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
Better than expected
Fast delivery. Parts are correct and in good shape. Fit perfectly. Back nailing again like new
Phil -
May 8, 2020
Verified Purchase
Great Service
E replacement parts is an amazing service. As a professional carpenter I frequently purchase parts to keep my tools running.
Guest -
July 20, 2019
Verified Purchase
Parts fit as expected
All of the parts were what was needed to fix my power nailer. I would have hoped you shipped a little faster than you did. However your price was much better than all others so it is a wash.
Guest -
July 10, 2019
Verified Purchase
t
t
t -
t days ago
Verified Purchase
eReplacementParts Team
t
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
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.
Does this fit my product?Questions & Answers for Gasket (a)
No questions have been asked yet
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.
Nail gun would not fire
James - June 25, 2017
👍 2 of 2 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Nutdriver, Allen wrench
Parts Used
Removed the old piston bumper and installed the new one and new gasket I have had this nail gun for almost 30 years I know it quite well I also can't believe that I can still get parts for it
Did you find this story helpful?
Thanks for voting and helping fellow customers!
framing nailer was leaking air when connected to air hose
Roger - December 28, 2021
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Medium
Time
1-2 hours
Tools Used
, allen wrench set, O ring pic, 8mm wrench, hammer, punch.
Dismantled entire gun piston bumper was breaking into small pieces causing air leak. I use my nail guns daily therefore when something like this happens I always do a complete rebuild, in this case the front bumper was also bad. I always allow a few hours thoroughly clean, inspect and rebuild everything properly to extend the time between rebuilds. recommendations: Take your time be patient, drink a beer if necessary and make it like brand new.
P.S. DO NOT REUSE OLD PARTS SUCH AS GASKETS, ROLLED PINS, ETC. CHEERS AND HAVE FUN!
P.S. DO NOT REUSE OLD PARTS SUCH AS GASKETS, ROLLED PINS, ETC. CHEERS AND HAVE FUN!
Did you find this story helpful?
Thanks for voting and helping fellow customers!
The lower noise guard gasket was leaking.
Walter - April 7, 2020
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Allen wrench sets
Parts Used
Have to remove the slide rail first. The take off the lower rail guide. Clean parts good before replacing parts.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
NAIL BROKE THE END OFF OF THE PISTON
JACK - October 21, 2019
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, ALLEN WRENCHES
REMOVED BROKEN PART,REINSTALLED PISTON AND NEW BUMPER.REPAIR FINISHED
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Nailer wouldn't fire
Adam - September 26, 2019
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, allen wrench
After disassembly & inspection needed a new piston bumper. Need to remove the entire front nose of the gun including the nail magazine. Once the nose piece is removed the bumper just fits right inside and re-assemble in reverse order
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Megazine was broke as well as the top cover and my gasket were blown
Onorina - January 9, 2019
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Long hex wrench
Removing the megazine completely
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Nail gun was not sinking nails and air started to leak from gaskets. The piston bumper had broken to pieces and the gaskets had worn out.
Jose - May 20, 2018
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Pliers, Power Drill, Socket set, Wrench Set, Nutdriver
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Leaking air in several places
Rhett - March 12, 2018
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
, Allen wrench
Removed end cap and driver guide { nose piece } replaced nose piece gasket, replaced damaged o-ring re-assembled gun and tested. Gun good to go.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Leak too much air,
Charles - May 14, 2017
Tool Type
Nailer
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Wrench Set, Allen wrench
Removed the four screws from the top cover
Looked to see what parts I would need to fix the leak.
I ordered about every o-ring and seal in the gun
Replaced all that I ordered
The gun is like new again
Looked to see what parts I would need to fix the leak.
I ordered about every o-ring and seal in the gun
Replaced all that I ordered
The gun is like new again
Did you find this story helpful?
Thanks for voting and helping fellow customers!
leaks air at top and double fire
wayne - July 29, 2019
👍 0 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Wrench Set, Nutdriver, picks for \\\'O\\\' rings
1. removed top and replaced head cap and gasket
2. Removed cylinder and replaced 'O' rings
3. removed nose and replaced gasket and piston bumper
4. Cylinder plate did not come out easily but other than that repair went well
2. Removed cylinder and replaced 'O' rings
3. removed nose and replaced gasket and piston bumper
4. Cylinder plate did not come out easily but other than that repair went well
Did you find this story helpful?
Thanks for voting and helping fellow customers!
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.
