Part Location Diagram of N905972 DeWALT PISTON RING
See part 11 in the diagram
( Grid squares measure 1x1 inch )

PISTON RING N905972

$6.25
In Stock
Fix Number:
FIX18995697
Manufacturer #:
N905972
Manufactured by:
DeWALT

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.

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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
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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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Model Compatibility

This part works with the following models:
Fix Number: FIX18995697
Manufacturer Part Number: N905972
Brand Model Number Description
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