Product Information
Description:
Genuine Hitachi replacement part, this item is sold individually. This O-Ring is place in the groove in the piston in all the tool models listed below. Its purpose is to create a seal in the cylinder, so when the trigger of the tool is activated, will push the driver and piston assembly down and sink the fastener that is being used. Some of the tools listed offer an O-ring kit that would have all the essential O-rings in it. |
Frequently Purchased With
Compatibility
the 35 compatible machines
This part is compatible with the following machines:
Metabo HPT (Hitachi)
NT65A3 16-Gauge Finish Nailer
NV45AB2 Side Load Coil Roofing Nailer
NV45AB2(S) Bottom Load Coil Roofing Nailer
NV45AE 1-3/4" Side Load Coil Roofing Nailer
NV50A1 Light-Duty Coil Utility Nailer
NV50AA Light-Duty Coil Utility Nailer
N5008AC/P 7/16" 1" - 2" x 16 Gauge Standard Crown Stapler
N5010A 1/2" Standard Crown Stapler
N5021A 15/16" Wide Crown Stapler
N5024A 1" Wide Crown Stapler
NV50AP2 Full Round Head, Coil, Wire Collation Pasti-Tacker Plus
N3824A .5"-1.5" Wide Crown Stapler 16Ga
N5008A1 Stapler
N5008AC 2" 16Ga 1"-2"Standard Crown Construction Stapler
NH451 "T" Nailer
NT50A 18Ga Brad Nailer
NT65A 16 Gage Brad Nailer
NT65A2 2-1/2" 16Ga Finish Nailer
NV45AB2 Side Load Coil Roofing Nailer
NV45AB2(S) Bottom Load Coil Roofing Nailer
NV45AE 1-3/4" Side Load Coil Roofing Nailer
NV50A1 Light-Duty Coil Utility Nailer
NV50AA Light-Duty Coil Utility Nailer
N5008AC/P 7/16" 1" - 2" x 16 Gauge Standard Crown Stapler
N5010A 1/2" Standard Crown Stapler
N5021A 15/16" Wide Crown Stapler
N5024A 1" Wide Crown Stapler
NV50AP2 Full Round Head, Coil, Wire Collation Pasti-Tacker Plus
N3824A .5"-1.5" Wide Crown Stapler 16Ga
N5008A1 Stapler
N5008AC 2" 16Ga 1"-2"Standard Crown Construction Stapler
NH451 "T" Nailer
NT50A 18Ga Brad Nailer
NT65A 16 Gage Brad Nailer
NT65A2 2-1/2" 16Ga Finish Nailer
NV45AA Heavy Duty Coil Nailer
NV45AB 1-3/4" Heavy Duty, Roofing Coil Nailer
VH501 Nailer
N5008AC2 Stapler
N5024A2 Stapler
NT65A5M 2-1/2 Inch 16ga Finish Nailer Pro 2-1/2 Inch 16ga Straight Finish Nailer
NV45AB2M 1 3/4 Inch Roofing Coil Nailer Side Load Magazine (Wire Collation)
NV50A1M 2 Inch Utility Coil Nailer (Wire Collation)
N5008AC2M 2 Inch 16 Ga Standard 7/16-Inch Crown Construction Stapler
N5010ABM 15.5 Gauge 1/2 Inch Crown Flooring Stapler
N5010AM 2 Inch 16 Ga Medium 1/2 Inch Crown Stapler
N5021AM 2 Inch 16 Ga Wide 15/16 Inch Crown Stapler
N5024A2M 2-Inch 16 Ga Wide 1 Inch Crown Stapler
NT65A5 Nailer
NV45AB3 Nailer
NV45AES Nailer
NV50AP Nailer
NV45AB 1-3/4" Heavy Duty, Roofing Coil Nailer
VH501 Nailer
N5008AC2 Stapler
N5024A2 Stapler
NT65A5M 2-1/2 Inch 16ga Finish Nailer Pro 2-1/2 Inch 16ga Straight Finish Nailer
NV45AB2M 1 3/4 Inch Roofing Coil Nailer Side Load Magazine (Wire Collation)
NV50A1M 2 Inch Utility Coil Nailer (Wire Collation)
N5008AC2M 2 Inch 16 Ga Standard 7/16-Inch Crown Construction Stapler
N5010ABM 15.5 Gauge 1/2 Inch Crown Flooring Stapler
N5010AM 2 Inch 16 Ga Medium 1/2 Inch Crown Stapler
N5021AM 2 Inch 16 Ga Wide 15/16 Inch Crown Stapler
N5024A2M 2-Inch 16 Ga Wide 1 Inch Crown Stapler
NT65A5 Nailer
NV45AB3 Nailer
NV45AES Nailer
NV50AP Nailer
Products Compatibility
This item works with the following types of products:
- • Nailer
- • Stapler
Questions & Answers for Piston O-ring
No questions have been asked yet
Repair Instructions: Submitted by Customers Like You
Tool Type:
Nailer
Repair Difficulty:
Expert
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Pliers, Power Drill, Socket set, Wrench Set, Nutdriver, Adjustable Wrench, The compressor
piston packings hammer nose teeth ETC
as well as opened and reassembled per already with the new pieces
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Tool Type:
Stapler
Parts Used:
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
, Allen wrench(metric)
Leaking air from exhaust pirt
Removed head
Removed exhaust deflector
Replaced all pets in head
Hard time removing part on outside of cylinder so I could replace o-ring between cylinder.
Found taped holes in part I couldn’t remove, screwed in two screws from head removal and could pull part out.
Replaced cylinder o-ring
Put back together
Still leaked from exhaust port
Disconnected from air supply and reconnect to air supply while holding trigger down.
Heard plop of driver returning to top
Air leak quit and stapler works great
Don’t know if any of the parts repaired the leak, moral of the story, try connecting to air supply while holding trigger
Removed exhaust deflector
Replaced all pets in head
Hard time removing part on outside of cylinder so I could replace o-ring between cylinder.
Found taped holes in part I couldn’t remove, screwed in two screws from head removal and could pull part out.
Replaced cylinder o-ring
Put back together
Still leaked from exhaust port
Disconnected from air supply and reconnect to air supply while holding trigger down.
Heard plop of driver returning to top
Air leak quit and stapler works great
Don’t know if any of the parts repaired the leak, moral of the story, try connecting to air supply while holding trigger
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Tool Type:
Stapler
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Wrench Set
Air leaks
Easy
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Tool Type:
Stapler
Parts Used:
Repair Difficulty:
Medium
Time Spent Repairing:
30-60 minutes
Tools Used:
Screwdriver, Pliers
Piston bumper was shredded
Pull off front of gun replace bumper very easy
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Tool Type:
Nailer
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
, allen wrenches,hammer.punch
driver not returning,nails not feeding
1 remove head cap to replace driver o-ring. 2 remove nose piece to replace bumper sheet. 3 remove guard and pin to replace feeder spring.4 replace guard
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Tool Type:
Nailer
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Socket set, Wrench Set, Nutdriver
Air leak, driver not returning.
Removed old parts and cleaned the housing, replaced with new parts and assembled, tested.
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Tool Type:
Nailer
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Pliers, Socket set, Wrench Set
Piston driver not returning
Replaced bumper sheet and piston -o- ring , replaced damaged gaskets ( top and bottom) .
Applied grease where needed, assembled and tested. Worked perfect.
Applied grease where needed, assembled and tested. Worked perfect.
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Tool Type:
Nailer
Parts Used:
Repair Difficulty:
Easy
Time Spent Repairing:
30-60 minutes
Tools Used:
Pliers, allen wrench set
Air nailer leaked air thru top of gun
1. Removed exhaust cover and head cap
2. Removed cylinder and cleaned out housing
3. Replaced O-rings, exhaust valve, and head cap
4. Reassembled nailer
2. Removed cylinder and cleaned out housing
3. Replaced O-rings, exhaust valve, and head cap
4. Reassembled nailer
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Tool Type:
Stapler
Repair Difficulty:
Easy
Time Spent Repairing:
15-30 minutes
Tools Used:
Screwdriver, Allen wrench
Driver broke
Removed head of stapler and tapped old driver out. Replaced o-ring on piston and installed new driver assembly and head gasket. Piece of cake! Half the price of bringing it to a tool shop.
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