O-ring 877368

Description:

Genuine Hitachi replacement part, this item is sold individually.
The 877368 O-Ring is placed in the groove on top of the Piston of the model numbers shown below.
This part aids in the operation of the piston driving the fastener and recoiling the piston.
If the piston is not working properly check this part along with all of the other O-rings and Seals in the tool.

Frequently Purchased With

Gasket (b)
$6.06

Gasket (a)
$4.99

Piston Bumper ..
$20.62

Cylinder O-rin..
$4.99

Cylinder Ring..
$4.99

Head Cap And G..
$51.49

O-ring
$3.99

Gasket (f)
$4.99

Compatibility

This part is compatible with the following machines:

Metabo HPT (Hitachi)

NR83AA3 Clipped Head Framing Nailer
NR90AC3 Full Head Framing Nailer
NR65AK Strap-Tite Fastening System Strip Nailer
NR65AK(S) Short Magazine Strap-Tite Fastening System
NV65AC Coil Pallet Nailer
NV75AG Coil Siding/Framing Nailer
NV83A2 Full Round Head Coil Nailer
NV85AG Coil Siding/Framing Nailer
NR83A2(S) Framing Nailer, Full Head, Plastic Strip Collation (without Depth Adjustment)
83AA2 Strip Nailer
NR83A 3-1/4" Full Head Nailer
NR83AA 3-1/4" Clipped head Framing Nailer
NR83AA2 3-1/4" Clipped head Framing Nailer
NR90AC2 3-1/2" Full head Framing Nailer
NV65AA Nailer
NV75A Nailer
NV83A 3-1/4" Full Head, Framing Coil Nailer
NV83A3 Nailer

NV83A4 Nailer
NV83A13 Nailer
NR83A3S Strip Nailer
NR83A3 Strip Nailer
NR83AA4 3-1/4" Paper Collated Framing Nailer
NR83A2 Strip Nailer
NR65AK2 Strip Nailer
NR83A5 Strip Nailer
NR65AK2M Strap-Tite 2-1/2 Inch Strip Nailer
NR83A5(S)M 3-1/4 Inch Rnd Head Framing Nailer W/Out Depth Adjustment
NR83A5M 3-1/4 Inch Rnd Head Framing Nailer W/ Depth Adjustment
NR83AA5M 3-1/4 Inch Clipped Head Fram Nailer Accepts Paper Tape Collated Nails
NV75A5M 3 Inch Siding/Framing Coil Nailer Plastic And Wire Collated Coil
NV83A5M 3-1/4 Inch Coil Framing Nailer 2 Inch-3-1/4 Inch X 0.099 Inch-0.131 Inch
NR65AK2(S) Nailer
NR83A2(Y) Nailer
NR83A5(S) Nailer
NR83AA5 Nailer

Expand the 36 compatible machines

Products Compatibility

This item works with the following types of products:

• Nailer

Repair Instructions: Submitted by Customers Like You

1 of 1 people found this instruction helpful

Tool Type:

Nailer

Parts Used:

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

, Allen wrench

Internal plastic parts & O rings plus gaskets disintegrated

Removed all screws
Removed head
Removed piston
Changed out o rings
Cleaned up gasket surfaces,.
Installed new parts
Added oil and tested gun.

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1 of 1 people found this instruction helpful

Tool Type:

Nailer

Parts Used:

O-ring - 877368

Cylinder O-ring - 890443

Cylinder Ring - 886483

Valve O-ring - 872821

Head Cap And Gasket Set - 877852

Gasket (b) - 877325

Repair Difficulty:

Medium

Time Spent Repairing:

1-2 hours

Tools Used:

Screwdriver, Allen wrench

Leaking air from head

Removed the top of the nail gun, located the worn parts and ordered them.
Replaced the worn parts with the new ones. It fires like new again

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Tool Type:

Nailer

Parts Used:

O-ring - 877368

Cylinder O-ring - 890443

Cylinder O-ring (i.d 79.3) - 877313

Cylinder O-ring (i.d 69.3) - 877314

Gasket (g) - 877327

Cylinder O-ring (i.d 63.9) - 890444

Gasket (a) - 877334

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Socket set, Wrench Set, Nutdriver, picks for \\\'O\\\' rings

leaks air at top and double fire

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

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Tool Type:

Nailer

Parts Used:

Gasket (f) - 877329

Exhaust Valve (orange) - 884110

O-ring - 877368

Gasket (g) - 877327

Head Cap And Gasket Set - 887769

Gasket (b) - 877325

Gasket C - 877854

Repair Difficulty:

Easy

Time Spent Repairing:

15-30 minutes

Tools Used:

Pliers, Wrench Set, Scraper blade

Nailgun leaked air.

Took apart and replaced the parts. Reassembled.

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Tool Type:

Nailer

Parts Used:

O-ring - 877368

Cylinder O-ring - 890443

Cylinder O-ring (i.d 79.3) - 877313

Cylinder O-ring (i.d 69.3) - 877314

Cylinder Ring - 886483

Gasket (g) - 877327

Cylinder O-ring (i.d 63.9) - 890444

Piston Bumper (b) - 883511

Gasket (a) - 877334

Gasket (c) - 877326

Gasket (b) - 877325

Repair Difficulty:

Medium

Time Spent Repairing:

30-60 minutes

Tools Used:

Screwdriver, Pliers, Wrench Set, Allen wrench

Leak too much air,

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

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Reviews

Average Rating (out of 5):

5 Reviews

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I-ring

You sent them. They fit!

Guest - January 27, 2022 Verified Purchase

Found what i needed

Perfect fit and function. Will use this website again, really appreciate marked diagrams.

Guest - April 29, 2021 Verified Purchase

Very good services

Hitachi coil

Guest - January 26, 2021 Verified Purchase

repair went well

this order took weeks to be shipped

Frank - March 9, 2022 Verified Purchase

Did NOT fit the tool at all. Turned out to be useless. However, ....

This part does NOT fit, nor is there a place for it in my Hitachi NR83A Nailer. However, your parts people were very helpful and I finally fixed my top end air leak with part 12A that I purchased from you. We in Hawaii (and also Alaska) appreciate the fact that you will ship usig USPS, which is way more reasonalble than FEDEX and UPS. Mahalo.

Guest - September 4, 2019 Verified Purchase

Verified Purchase

eReplacementParts Team

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