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PISTON RING N905972

$6.25

Fix Number:: FIX18995697
Manufacturer #:: N905972
Manufactured by:: DeWALT

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Product Description
Questions and Answers
Related Parts
Model Compatibility

Product Description

This is an OEM piston ring and is sold individually. The seal allows pressure in the cylinder when the gun is engaged. The pressure pushes the piston down into the cylinder. This piston ring will deteriorate with time and this seal will loosen. When the piston ring is not sealing as it should, the driver can lose power and not work at all. This is a very simple repair and starts by removing the top cap from the tool. Next, remove the piston and ring. The new piston can now be installed in its place. The new piston ring fits over the top of the piston, just be careful not to damage it.

Works with the following brands:

Bostitch, DeWALT, Porter Cable, Craftsman
Works with the following products:
Nailer
Part# N905972 replaces these:

180457, N905972, P180457

Works with the following brands:: Bostitch, DeWALT, Porter Cable, Craftsman
Works with the following products: Nailer
Part# N905972 replaces these:: 180457, N905972, P180457

Questions and Answers

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John

March 4, 2025

Gun will fire but will not shoot staples into material. Piston jams every 4 to 6 shots. Newer plastic piece in 5he backside cap. Need help it's the bosses gun.

For model number SX1838

Hi John, Thank you for your question. If the piston will not shoot the staples, we recommend checking the piston driver, part number FIX17016273, the piston head valve, part number FIX10246998, the piston ring, part number FIX17016268, and the bumper, part number FIX10247004. We hope this helps!

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Related Parts:

BUMPER

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HEAD VALVE BODY

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HEAD VALVE BODY

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PISTON DRIVER

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PISTON DRIVER ASSEMBLY

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PISTON DRIVER

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BUMPER

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O-RING

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CONTACT

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SPRING

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CHECK SEAL

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SLEEVE-CYLINDER

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GASKET-FRAME/CAP

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O-RING-44.7MMX2.4MM

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GASKET-END CAP

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Affresh Dishwasher Cleaner Tablets - 6

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Affresh Washing Machine Cleaner Tablets – 6 Count

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View Less

Model Compatibility

This part works with the following models:

Fix Number: FIX18995697
Manufacturer Part Number: N905972

Brand	Model Number	Description
Porter Cable	BN200C	Nailer - Brad Nailer
Porter Cable	BN200CR	Nailer - Brad Nailer
Bostitch	BT1855	Nailer - Oil-Free Brad Nailer
Bostitch	BT1855K	Nailer - 18 Gauge Brad Nailer
Bostitch	BTFP12233	Nailer - Smart Point 18 GA Brad Nailer Kit
Craftsman	CMPBN18K	Nailer - 18ga Brad Nailer
Craftsman	CMPNC18K	Nailer - 18ga Nrrw Crwn Stplr
DeWALT	DWEHF1838K	Nailer - 18ga 7/32 Crwn Flr S
DeWALT	DWFP12231	Nailer - 18 Gauge 2" Brad Nailer
DeWALT	DWFP12232	Nailer - 18 Gauge 1-1/2" x 1/4" Narrow Crown Stapler
DeWALT	DWFP12233	Nailer - 53445
DeWALT	DWFP12233R	Nailer - Pin Nailer
DeWALT	DWFP1838	Nailer - 18ga 1-1/2 Stapler
DeWALT	DWFP1838R	Nailer - Stapler
DeWALT	DWLHF2025K	- 20ga Engr Floor Stap
Bostitch	EHF1838K	Nailer - Flooring Stapler
Bostitch	LHF2025K	Nailer - Flooring Stapler
Porter Cable	NS150C	Nailer - 18G Stapler
Bostitch	SL1838BC	Nailer - Cap Stapler
Bostitch	SX1838	Nailer - Pneumatic Brad Nailer & Stapler
Bostitch	SX1838K	Nailer - Oil-Free Stapler