Easy
15-30 minutes
This is a genuine Hitachi replacement part, it is sold individually.
The purpose of the 877325 Gasket is to create a seal between the Exhaust Cover and the Main Body of the nail gun models shown below.
Because of the pressure this Gasket is subject to it will wear and will need to be replaced
Indications are an air leak, sluggish or not sinking the nail, or the driver not retracting.
Gasket (b) 877325
OEM part for: Metabo HPT (Hitachi)
Part Number: 877325
$5.81
In Stock
Ships within 1 business day 
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Product Description ?
- Classification: Part
- Weight: 0.02 lbs.
- Shipping: Ships Worldwide
Frequently Purchased Together ?
Compatibility
This part will fit the following 27 machines
Metabo HPT (Hitachi)
NR83AA3 Clipped Head Framing Nailer View Diagrams & Manuals
NV65AC Coil Pallet Nailer View Diagrams & Manuals
NV83A2 Full Round Head Coil Nailer View Diagrams & Manuals
NV85AG Coil Siding/Framing 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
NV65AA Nailer View Diagrams & Manuals
NV75A Nailer View Diagrams & Manuals
NV83A 3-1/4" Full Head, Framing Coil Nailer View Diagrams & Manuals
NV83A3 Nailer View Diagrams & Manuals
NV83A4 Nailer View Diagrams & Manuals
NV83A7 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
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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.
Nailgun leaked air.
Carlos - January 30, 2018
👍 2 of 2 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Pliers, Wrench Set, Scraper blade
Took apart and replaced the parts. Reassembled.
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Leak too much air,
Charles - May 14, 2017
👍 1 of 1 people found this instruction helpful
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
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Nailer was leaking air and would not operate correctly.
Harry - April 28, 2017
👍 1 of 1 people found this instruction helpful
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Nutdriver
Disassembled the top side of the nailer and inspected components for damage. Found head cap was damaged. Researched the replacement parts, ordered and installed the new head cap and the gaskets. Tested the nailer, held the air pressure and operated just fine. Schematic explosion helped in ordering correct replacement parts. Thanks. Saved a $500 nailer.
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Leaking gaskets, interior plunger ,driver damage
Karl - March 29, 2024
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Allen wrench set
Simply removed the head, removed the broken parts and replaced them with new parts. A much simpler repair than I expected. The nail guns work perfectly now.
No special skills required.
No special skills required.
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Leaked air
William - September 19, 2021
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Allen wrench
Parts Used
Took top off and replaced gasket.
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nails not feeding
Matthew - April 1, 2021
Tool Type
Nailer
Difficulty
Medium
Time
15-30 minutes
Tools Used
Pliers, Adjustable Wrench, Allen pack
removed old feeder shaft and feeder spring
Installed new spring, shaft and shaft ring
Installed new spring, shaft and shaft ring
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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
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Internal plastic parts & O rings plus gaskets disintegrated
RON - October 9, 2018
Tool Type
Nailer
Difficulty
Easy
Time
15-30 minutes
Tools Used
, Allen wrench
Removed all screws
Removed head
Removed piston
Changed out o rings
Cleaned up gasket surfaces,.
Installed new parts
Added oil and tested gun.
Removed head
Removed piston
Changed out o rings
Cleaned up gasket surfaces,.
Installed new parts
Added oil and tested gun.
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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
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My framing nailer was blowing air out of the exhaust continuously.
Al - May 30, 2017
Tool Type
Nailer
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver, Pliers, Allen head wrench
I removed the head cap and exhaust port finding the carbon seal inside the cap disintegrated. Cleaned the inside of the casing and replaced the head cap and gasket. Stopped leaking air and fires like new.
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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.
